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Author Li, L.L.; Partoens, B.; Xu, W.; Peeters, F.M.
  Title Electric-field modulation of linear dichroism and Faraday rotation in few-layer phosphorene Type A1 Journal article
  Year 2019 Publication (down) 2D materials Abbreviated Journal 2D Mater
  Volume 6 Issue 1 Pages 015032
  Keywords A1 Journal article; Condensed Matter Theory (CMT)
  Abstract Electro-optical modulators, which use an electric voltage (or an electric field) to modulate a beam of light, are essential elements in present-day telecommunication devices. Using a self-consistent tight-binding approach combined with the standard Kubo formula, we show that the optical conductivity and the linear dichroism of few-layer phosphorene can be modulated by a perpendicular electric field. We find that the field-induced charge screening plays a significant role in modulating the optical conductivity and the linear dichroism. Distinct absorption peaks are induced in the conductivity spectrum due to the strong quantum confinement along the out-of-plane direction and to the field-induced forbidden-to-allowed transitions. The field modulation of the linear dichroism becomes more pronounced with increasing number of phosphorene layers. We also show that the Faraday rotation is present in few-layer phosphorene even in the absence of an external magnetic field. This optical Hall effect is induced by the reduced lattice symmetry of few-layer phosphorene. The Faraday rotation is greatly influenced by the field-induced charge screening and is strongly dependent on the strength of perpendicular electric field and on the number of phosphorene layers.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Editor
  Language Wos 000454321100002 Publication Date 2018-11-28
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 2053-1583 ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 6.937 Times cited 23 Open Access
  Notes ; This work was financially supported by the Flemish Science Foundation (FWO-Vl) and by the FLAG-ERA project TRANS-2D-TMD. ; Approved Most recent IF: 6.937
  Call Number UA @ admin @ c:irua:156776 Serial 5207
Permanent link to this record
 

 
Author Heyne, M.H.; Marinov, D.; Braithwaite, N.; Goodyear, A.; de Marneffe, J.-F.; Cooke, M.; Radu, I.; Neyts, E.C.; De Gendt, S.
  Title A route towards the fabrication of 2D heterostructures using atomic layer etching combined with selective conversion Type A1 Journal article
  Year 2019 Publication (down) 2D materials Abbreviated Journal 2D Mater
  Volume 6 Issue 3 Pages 035030
  Keywords A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
  Abstract Heterostructures of low-dimensional semiconducting materials, such as transition metal dichalcogenides (MX2), are promising building blocks for future electronic and optoelectronic devices. The patterning of one MX2 material on top of another one is challenging due to their structural similarity. This prevents an intrinsic etch stop when conventional anisotropic dry etching processes are used. An alternative approach consist in a two-step process, where a sacrificial silicon layer is pre-patterned with a low damage plasma process, stopping on the underlying MoS2 film. The pre-patterned layer is used as sacrificial template for the formation of the top WS2 film. This study describes the optimization of a cyclic Ar/Cl-2 atomic layer etch process applied to etch silicon on top of MoS2, with minimal damage, followed by a selective conversion of the patterned Si into WS2. The impact of the Si atomic layer etch towards the MoS2 is evaluated: in the ion energy range used for this study, MoS2 removal occurs in the over-etch step over 1-2 layers, leading to the appearance of MoOx but without significant lattice distortions to the remaining layers. The combination of Si atomic layer etch, on top of MoS2, and subsequent Si-to-WS2 selective conversion, allows to create a WS2/MoS2 heterostructure, with clear Raman signals and horizontal lattice alignment. These results demonstrate a scalable, transfer free method to achieve horizontally individually patterned heterostacks and open the route towards wafer-level processing of 2D materials.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Editor
  Language Wos 000468335500004 Publication Date 2019-04-23
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 2053-1583 ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 6.937 Times cited Open Access Not_Open_Access
  Notes Approved Most recent IF: 6.937
  Call Number UA @ admin @ c:irua:160229 Serial 5266
Permanent link to this record
 

 
Author Van Pottelberge, R.; Moldovan, D.; Milovanović, S.P.; Peeters, F.M.
  Title Molecular collapse in monolayer graphene Type A1 Journal article
  Year 2019 Publication (down) 2D materials Abbreviated Journal 2D Mater
  Volume 6 Issue 4 Pages 045047
  Keywords A1 Journal article; Condensed Matter Theory (CMT)
  Abstract Atomic collapse is a phenomenon inherent to relativistic quantum mechanics where electron states dive in the positron continuum for highly charged nuclei. This phenomenon was recently observed in graphene. Here we investigate a novel collapse phenomenon when multiple sub- and supercritical charges of equal strength are put close together as in a molecule. We construct a phase diagram which consists of three distinct regions: (1) subcritical, (2) frustrated atomic collapse, and (3) molecular collapse. We show that the single impurity atomic collapse resonances rearrange themselves to form molecular collapse resonances which exhibit a distinct bonding, anti-bonding and non-bonding character. Here we limit ourselves to systems consisting of two and three charges. We show that by tuning the distance between the charges and their strength a high degree of control over the molecular collapse resonances can be achieved.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Editor
  Language Wos 000487692200003 Publication Date 2019-08-30
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 2053-1583 ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 6.937 Times cited 10 Open Access
  Notes ; We thank Matthias Van der Donck for fruitful discussions. This work was supported by the Research Foundation of Flanders (FWO-V1) through an aspirant research Grant for RVP and a postdoctoral Grant for SPM. ; Approved Most recent IF: 6.937
  Call Number UA @ admin @ c:irua:163756 Serial 5422
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Author Bacaksiz, C.; Yagmurcukardes, M.; Peeters, F.M.; Milošević, M.V.
  Title Hematite at its thinnest limit Type A1 Journal article
  Year 2020 Publication (down) 2d Materials Abbreviated Journal 2D Mater
  Volume 7 Issue 2 Pages 025029
  Keywords A1 Journal article; Condensed Matter Theory (CMT)
  Abstract Motivated by the recent synthesis of two-dimensional alpha-Fe2O3 (Balan et al 2018 Nat. Nanotechnol. 13 602), we analyze the structural, vibrational, electronic and magnetic properties of single- and few-layer alpha-Fe2O3 compared to bulk, by ab initio and Monte-Carlo simulations. We reveal how monolayer alpha-Fe2O3 (hematene) can be distinguished from the few-layer structures, and how they all differ from bulk through observable Raman spectra. The optical spectra exhibit gradual shift of the prominent peak to higher energy, as well as additional features at lower energy when alpha-Fe2O3 is thinned down to a monolayer. Both optical and electronic properties have strong spin asymmetry, meaning that lower-energy optical and electronic activities are allowed for the single-spin state. Finally, our considerations of magnetic properties reveal that 2D hematite has anti-ferromagnetic ground state for all thicknesses, but the critical temperature for Morin transition increases with decreasing sample thickness. On all accounts, the link to available experimental data is made, and further measurements are prompted.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Editor
  Language Wos 000537341000002 Publication Date 2020-01-20
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 2053-1583 ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 5.5 Times cited 12 Open Access
  Notes ; This work was supported by Research Foundation-Flanders (FWO-Vlaanderen). Computational resources were provided by Flemish Supercomputer Center(VSC), and TUBITAK ULAKBIM, High Performance and Grid Computing Center (TR-Grid e-Infrastructure). Part of this work was also supported by FLAG-ERA project TRANS-2D-TMD and TOPBOF-UAntwerp. MY was supported by a postdoctoral fellowship from the Flemish Science Foundation (FWO-Vl). ; Approved Most recent IF: 5.5; 2020 IF: 6.937
  Call Number UA @ admin @ c:irua:170301 Serial 6533
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Author Reyntjens, P.D.; Tiwari, S.; van de Put, M.L.; Sorée, B.; Vandenberghe, W.G.
  Title Magnetic properties and critical behavior of magnetically intercalated WSe₂ : a theoretical study Type A1 Journal article
  Year 2021 Publication (down) 2d Materials Abbreviated Journal 2D Mater
  Volume 8 Issue 2 Pages 025009
  Keywords A1 Journal article; Condensed Matter Theory (CMT)
  Abstract Transition metal dichalcogenides, intercalated with transition metals, are studied for their potential applications as dilute magnetic semiconductors. We investigate the magnetic properties of WSe2 doped with third-row transition metals (Co, Cr, Fe, Mn, Ti and V). Using density functional theory in combination with Monte Carlo simulations, we obtain an estimate of the Curie or Neel temperature. We find that the magnetic ordering is highly dependent on the dopant type. While Ti and Cr-doped WSe2 have a ferromagnetic ground state, V, Mn, Fe and Co-doped WSe2 are antiferromagnetic in their ground state. For Fe doped WSe2, we find a high Curie-temperature of 327 K. In the case of V-doped WSe2, we find that there are two distinct magnetic phase transitions, originating from a frustrated in-plane antiferromagnetic exchange interaction and a ferromagnetic out-of-plane interaction. We calculate the formation energy and reveal that, in contrast to earlier reports, the formation energy is positive for the intercalated systems studied here. We also show that in the presence of W-vacancies, it becomes favorable for Ti, Fe, and Co to intercalate in WSe2.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Editor
  Language Wos 000601127600001 Publication Date 2020-12-09
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 2053-1583 ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 6.937 Times cited 1 Open Access OpenAccess
  Notes ; The project or effort depicted was or is sponsored by the Department of Defense, Defense Threat Reduction Agency. The content of the information does not necessarily reflect the position or the policy of the federal government, and no official endorsement should be inferred. This material is based upon work supported by the National Science Foundation under Grant No. 1802166. Any opinions, findings and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation. This work was supported by IMEC's Industrial Affiliation Program. Peter D Reyntjens acknowledges support by the Eugene McDermott Fellowship program, under Grant Number 201806. ; Approved Most recent IF: 6.937
  Call Number UA @ admin @ c:irua:174951 Serial 6692
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Author Lavor, I.R.; Cavalcante, L.S.R.; Chaves, A.; Peeters, F.M.; Van Duppen, B.
  Title Probing the structure and composition of van der Waals heterostructures using the nonlocality of Dirac plasmons in the terahertz regime Type A1 Journal article
  Year 2021 Publication (down) 2d Materials Abbreviated Journal 2D Mater
  Volume 8 Issue 1 Pages 015014
  Keywords A1 Journal article; Condensed Matter Theory (CMT)
  Abstract Dirac plasmons in graphene are very sensitive to the dielectric properties of the environment. We show that this can be used to probe the structure and composition of van der Waals heterostructures (vdWh) put underneath a single graphene layer. In order to do so, we assess vdWh composed of hexagonal boron nitride and different types of transition metal dichalcogenides (TMDs). By performing realistic simulations that account for the contribution of each layer of the vdWh separately and including the importance of the substrate phonons, we show that one can achieve single-layer resolution by investigating the nonlocal nature of the Dirac plasmon-polaritons. The composition of the vdWh stack can be inferred from the plasmon-phonon coupling once it is composed by more than two TMD layers. Furthermore, we show that the bulk character of TMD stacks for plasmonic screening properties in the terahertz regime is reached only beyond 100 layers.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Editor
  Language Wos 000582820500001 Publication Date 2020-10-06
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 2053-1583 ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 6.937 Times cited 4 Open Access OpenAccess
  Notes ; This work was financially supported by the Brazilian Council for Research (CNPq), Brazilian National Council for the Improvement of Higher Education (CAPES) and by the Research Foundation Flanders (FWO) through a postdoctoral fellowship to B.V.D. ; Approved Most recent IF: 6.937
  Call Number UA @ admin @ c:irua:173507 Serial 6696
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Author Pandey, T.; Peeters, F.M.; Milošević, M.V.
  Title Pivotal role of magnetic ordering and strain in lattice thermal conductivity of chromium-trihalide monolayers Type A1 Journal article
  Year 2022 Publication (down) 2D materials Abbreviated Journal 2D Mater
  Volume 9 Issue 1 Pages 015034
  Keywords A1 Journal article; Condensed Matter Theory (CMT)
  Abstract Understanding the coupling between spin and phonons is critical for controlling the lattice thermal conductivity (kappa ( l )) in magnetic materials, as we demonstrate here for CrX3 (X = Br and I) monolayers. We show that these compounds exhibit large spin-phonon coupling (SPC), dominated by out-of-plane vibrations of Cr atoms, resulting in significantly different phonon dispersions in ferromagnetic (FM) and paramagnetic (PM) phases. Lattice thermal conductivity calculations provide additional evidence for strong SPC, where particularly large kappa ( l ) is found for the FM phase. Most strikingly, PM and FM phases exhibit radically different behavior with tensile strain, where kappa ( l ) increases with strain for the PM phase, and strongly decreases for the FM phase-as we explain through analysis of phonon lifetimes and scattering rates. Taken all together, we uncover the high significance of SPC on the phonon transport in CrX3 monolayers, a result extendable to other 2D magnetic materials, that will be useful in further design of thermal spin devices.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Editor
  Language Wos 000735170300001 Publication Date 2021-12-13
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 2053-1583 ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 5.5 Times cited 2 Open Access Not_Open_Access
  Notes Approved Most recent IF: 5.5
  Call Number UA @ admin @ c:irua:184642 Serial 7010
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Author Petrov, M.; Bekaert, J.; Milošević, M.V.
  Title Superconductivity in gallenene Type A1 Journal article
  Year 2021 Publication (down) 2d Materials Abbreviated Journal 2D Mater
  Volume 8 Issue 3 Pages 035056
  Keywords A1 Journal article; Condensed Matter Theory (CMT)
  Abstract Among the large variety of two-dimensional (2D) materials discovered to date, elemental monolayers that host superconductivity are very rare. Using ab initio calculations we show that recently synthesized gallium monolayers, coined gallenene, are intrinsically superconducting through electron-phonon coupling. We reveal that Ga-100 gallenene, a planar monolayer isostructural with graphene, is the structurally simplest 2D superconductor to date, furthermore hosting topological edge states due to its honeycomb structure. Our anisotropic Eliashberg calculations show distinctly three-gap superconductivity in Ga-100, in contrast to the alternative buckled Ga-010 gallenene which presents a single anisotropic superconducting gap. Strikingly, the critical temperature (T ( c )) of gallenene is in the range of 7-10 K, exceeding the T ( c ) of bulk gallium from which it is exfoliated. Finally we explore chemical functionalization of gallenene with hydrogen, and report induced multigap superconductivity with an enhanced T ( c ) in the resulting gallenane compound.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Editor
  Language Wos 000667458500001 Publication Date 2021-06-01
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 2053-1583 ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 6.937 Times cited 8 Open Access OpenAccess
  Notes Approved Most recent IF: 6.937
  Call Number UA @ admin @ c:irua:179623 Serial 7025
Permanent link to this record
 

 
Author Lavor, I.R.; Chaves, A.; Peeters, F.M.; Van Duppen, B.
  Title Tunable coupling of terahertz Dirac plasmons and phonons in transition metal dichalcogenide-based van der Waals heterostructures Type A1 Journal article
  Year 2021 Publication (down) 2d Materials Abbreviated Journal 2D Mater
  Volume Issue Pages 015018
  Keywords A1 Journal article; Condensed Matter Theory (CMT)
  Abstract Dirac plasmons in graphene hybridize with phonons of transition metal dichalcogenides (TMDs) when the materials are combined in so-called van der Waals heterostructures (vdWh), thus forming surface plasmon-phonon polaritons (SPPPs). The extend to which these modes are coupled depends on the TMD composition and structure, but also on the plasmons' properties. By performing realistic simulations that account for the contribution of each layer of the vdWh separately, we calculate how the strength of plasmon-phonon coupling depends on the number and composition of TMD layers, on the graphene Fermi energy and the specific phonon mode. From this, we present a semiclassical theory that is capable of capturing all relevant characteristics of the SPPPs. We find that it is possible to realize both strong and ultra-strong coupling regimes by tuning graphene's Fermi energy and changing TMD layer number.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Editor
  Language Wos 000722020100001 Publication Date 2021-11-08
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 2053-1583 ISBN Additional Links UA library record; WoS full record
  Impact Factor 6.937 Times cited 1 Open Access OpenAccess
  Notes Approved Most recent IF: 6.937
  Call Number UA @ admin @ c:irua:183053 Serial 7036
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Author Chaves, A.; Covaci, L.; Peeters, F.M.; Milošević, M.V.
  Title Topologically protected moiré exciton at a twist-boundary in a van der Waals heterostructure Type A1 Journal article
  Year 2022 Publication (down) 2D materials Abbreviated Journal 2D Mater
  Volume 9 Issue 2 Pages 025012
  Keywords A1 Journal article; Electron microscopy for materials research (EMAT); Condensed Matter Theory (CMT)
  Abstract A twin boundary in one of the layers of a twisted van der Waals heterostructure separates regions with near opposite inter-layer twist angles. In a MoS<sub>2</sub>/WSe<sub>2</sub>bilayer, the regions with<inline-formula><tex-math><?CDATA $Rh^h$?></tex-math><math overflow=“scroll”><msubsup><mi>R</mi><mi>h</mi><mi>h</mi></msubsup></math><inline-graphic href=“tdmac529dieqn1.gif” type=“simple” /></inline-formula>and<inline-formula><tex-math><?CDATA $Rh^X$?></tex-math><math overflow=“scroll”><msubsup><mi>R</mi><mi>h</mi><mi>X</mi></msubsup></math><inline-graphic href=“tdmac529dieqn2.gif” type=“simple” /></inline-formula>stacking registry that defined the sub-lattices of the moiré honeycomb pattern would be mirror-reflected across such a twist boundary. In that case, we demonstrate that topologically protected chiral moiré exciton states are confined at the twist boundary. These are one-dimensional and uni-directional excitons with opposite velocities for excitons composed by electronic states with opposite valley/spin character, enabling intrinsic, guided, and far reaching valley-polarized exciton currents.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Editor
  Language Wos 000760518100001 Publication Date 2022-04-01
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 2053-1583 ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 5.5 Times cited 3 Open Access OpenAccess
  Notes Fonds Wetenschappelijk Onderzoek; Conselho Nacional de Desenvolvimento Científico e Tecnológico, PQ ; Approved Most recent IF: 5.5
  Call Number CMT @ cmt @c:irua:187124 Serial 7046
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Author Menezes, R.M.; Šabani, D.; Bacaksiz, C.; de Souza Silva, C.C.; Milošević, M.V.
  Title Tailoring high-frequency magnonics in monolayer chromium trihalides Type A1 Journal article
  Year 2022 Publication (down) 2D materials Abbreviated Journal 2D Mater
  Volume 9 Issue 2 Pages 025021
  Keywords A1 Journal article; Condensed Matter Theory (CMT)
  Abstract Monolayer chromium-trihalides, the archetypal two-dimensional (2D) magnetic materials, are readily suggested as a promising platform for high-frequency magnonics. Here we detail the spin-wave properties of monolayer CrBr<sub>3</sub>and CrI<sub>3</sub>, using spin-dynamics simulations parametrized from the first principles. We reveal that spin-wave dispersion can be tuned in a broad range of frequencies by strain, paving the way towards flexo-magnonic applications. We further show that ever-present halide vacancies in these monolayers host sufficiently strong Dzyaloshinskii-Moriya interaction to scatter spin-waves, which promotes design of spin-wave guides by defect engineering. Finally we discuss the spectra of spin-waves propagating across a moiré-periodic modulation of magnetic parameters in a van der Waals heterobilayer, and show that the nanoscale moiré periodicities in such samples are ideal for realization of a magnonic crystal in the terahertz frequency range. Recalling the additional tunability of magnetic 2D materials by electronic gating, our results situate these systems among the front-runners for prospective high-frequency magnonic applications.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Editor
  Language Wos 000771735500001 Publication Date 2022-04-01
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 2053-1583 ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor 5.5 Times cited Open Access OpenAccess
  Notes Fundação de Amparo à Ciência e Tecnologia do Estado de Pernambuco; Special Research Funds of the University of Antwerp; Conselho Nacional de Desenvolvimento Científico e Tecnológico; Fonds Wetenschappelijk Onderzoek; Coordenação de Aperfeiçoamento de Pessoal de Nível Superior; Approved Most recent IF: 5.5
  Call Number CMT @ cmt @c:irua:187125 Serial 7048
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Author Yorulmaz, U.; Šabani, D.; Sevik, C.; Milošević, M.V.
  Title Goodenough-Kanamori-Anderson high-temperature ferromagnetism in tetragonal transition-metal xenes Type A1 Journal article
  Year 2024 Publication (down) 2D materials Abbreviated Journal
  Volume 11 Issue 3 Pages 035013-10
  Keywords A1 Journal article; Condensed Matter Theory (CMT)
  Abstract Seminal Goodenough-Kanamori-Anderson (GKA) rules provide an inceptive understanding of the superexchange interaction of two magnetic metal ions bridged with an anion, and suggest fostered ferromagnetic interaction for orthogonal bridging bonds. However, there are no examples of two-dimensional (2D) materials with structure that optimizes the GKA arguments towards enhanced ferromagnetism and its critical temperature. Here we reveal that an ideally planar GKA ferromagnetism is indeed stable in selected tetragonal transition-metal xenes (tTMXs), with Curie temperature above 300 K found in CrC and MnC. We provide the general orbitally-resolved analysis of magnetic interactions that supports the claims and sheds light at the mechanisms dominating the magnetic exchange process in these structures. Furthermore, we propose the set of three GKA-like rules that will guarantee room temperature ferromagetnism. With recent advent of epitaxially-grown tetragonal 2D materials, our findings earmark tTMXs for facilitated spintronic and magnonic applications, or as a desirable magnetic constituent of functional 2D heterostructures.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Editor
  Language Wos 001208053200001 Publication Date 2024-04-12
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 2053-1583 ISBN Additional Links UA library record; WoS full record
  Impact Factor 5.5 Times cited Open Access
  Notes Approved Most recent IF: 5.5; 2024 IF: 6.937
  Call Number UA @ admin @ c:irua:205464 Serial 9153
Permanent link to this record
 

 
Author Clima, S.; McMitchell, S.R.C.; Florent, K.; Nyns, L.; Popovici, M.; Ronchi, N.; Di Piazza, L.; Van Houdt, J.; Pourtois, G.
  Title First-principles perspective on poling mechanisms and ferroelectric/antiferroelectric behavior of Hf1-xZrxO2 for FEFET applications Type P1 Proceeding
  Year 2018 Publication (down) 2018 Ieee International Electron Devices Meeting (iedm) Abbreviated Journal
  Volume Issue Pages
  Keywords P1 Proceeding; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
  Abstract We investigate at the atomic level the most probable phase transformations under strain, that are responsible for the ferroelectric/ antiferroelectric behavior in Hf1-xZrxO2 materials. Four different crystalline phase transformations exhibit a polar/non-polar transition: monoclinic-to-orthorhombic requires a gliding strain tensor, orthorhombic-to-orthorhombic transformation does not need strain to polarize the material, whereas tetragonal-to-cubic cell compression and tetragonal-to-orthorhombic cell elongation destabilizes the non-polar tetragonal phase, facilitating the transition towards a polar atomic configuration, therefore changing the polarization-electric field loop from antiferroelectric to ferroelectric. Oxygen vacancies can reduce drastically the polarization reversal barriers.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Editor
  Language Wos 000459882300073 Publication Date
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 978-1-72811-987-8; 978-1-72811-987-8 ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor Times cited Open Access
  Notes Approved no
  Call Number UA @ admin @ c:irua:158693 Serial 7972
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Author Conings, B.; Babayigit, A.; Klug, M.; Bai, S.; Gauquelin, N.; Sakai, N.; Wang, J.T.-W.; Verbeeck, J.; Boyen, H.-G.; Snaith, H.
  Title Getting rid of anti-solvents: gas quenching for high performance perovskite solar cells Type P1 Proceeding
  Year 2018 Publication (down) 2018 Ieee 7th World Conference On Photovoltaic Energy Conversion (wcpec)(a Joint Conference Of 45th Ieee Pvsc, 28th Pvsec & 34th Eu Pvsec) Abbreviated Journal
  Volume Issue Pages
  Keywords P1 Proceeding; Engineering sciences. Technology; Electron microscopy for materials research (EMAT)
  Abstract As the field of perovskite optoelectronics developed, a plethora of strategies has arisen to control their electronic and morphological characteristics for the purpose of producing high efficiency devices. Unfortunately, despite this wealth of deposition approaches, the community experiences a great deal of irreproducibility between different laboratories, batches and preparation methods. Aiming to address this issue, we developed a simple deposition method based on gas quenching that yields smooth films for a wide range of perovskite compositions, in single, double, triple and quadruple cation varieties, and produces planar heterojunction devices with competitive efficiencies, so far up to 20%.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Editor
  Language Wos 000469200401163 Publication Date 2018-12-08
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 978-1-5386-8529-7 ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor Times cited Open Access
  Notes Approved Most recent IF: NA
  Call Number UA @ admin @ c:irua:160468 Serial 5365
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Author Yu, H.; Schaekers, M.; Chew, S.A.; Eyeraert, J.-L.; Dabral, A.; Pourtois, G.; Horiguchi, N.; Mocuta, D.; Collaert, N.; De Meyer, K.
  Title Titanium (germano-)silicides featuring 10-9 Ω.cm2 contact resistivity and improved compatibility to advanced CMOS technology Type P1 Proceeding
  Year 2018 Publication (down) 2018 18th International Workshop On Junction Technology (iwjt) Abbreviated Journal
  Volume Issue Pages 80-84 T2 - 18th International Workshop on Junction
  Keywords P1 Proceeding; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
  Abstract uIn this work, we discuss three novel Ti (germano-)silicidation techniques featuring respectively the pre-contact amorphization implantation (PCAI), the TiSi co-deposition, and Ti atomic layer deposition (ALD). All three techniques form TiSix(Ge-y) contacts with ultralow contact resistivity (rho(c)) of (1-3)x10(-9) Omega.cm(2) on both highly doped n-Si and p-SiGe substrates: these techniques meet rho(c) requirement of 5-14 nm CMOS technology and feature unified CMOS contact solutions. We further discuss the compatibility of these techniques to the realistic CMOS transistor fabrication.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Editor
  Language Wos 000502768600020 Publication Date
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 978-1-5386-4511-6; 978-1-5386-4511-6 ISBN Additional Links UA library record; WoS full record
  Impact Factor Times cited Open Access
  Notes Approved no
  Call Number UA @ admin @ c:irua:165190 Serial 8673
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Author Van de Put, M.; Thewissen, M.; Magnus, W.; Sorée, B.; Sellier, J.M.
  Title Spectral force approach to solve the time-dependent Wigner-Liouville equation Type P1 Proceeding
  Year 2014 Publication (down) 2014 International Workshop On Computational Electronics (iwce) Abbreviated Journal
  Volume Issue Pages
  Keywords P1 Proceeding; Condensed Matter Theory (CMT)
  Abstract
  Address
  Corporate Author Thesis
  Publisher Ieee Place of Publication New york Editor
  Language Wos Publication Date 0000-00-00
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 978-1-4799-5433-9 ISBN Additional Links UA library record; WoS full record;
  Impact Factor Times cited Open Access
  Notes Approved Most recent IF: NA
  Call Number UA @ lucian @ c:irua:122221 Serial 3071
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Author Sankaran, K.; Clima, S.; Mees, M.; Adelmann, C.; Tokei, Z.; Pourtois, G.
  Title Exploring alternative metals to Cu and W for interconnects : an ab initio Insight Type P1 Proceeding
  Year 2014 Publication (down) 2014 Ieee International Interconnect Technology Conference / Advanced Metallization Conference (iitc/amc) Abbreviated Journal
  Volume Issue Pages 193-195
  Keywords P1 Proceeding; Engineering sciences. Technology; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
  Abstract The properties of alternative metals to Cu and W for interconnect applications are reviewed based on first-principles simulations and benchmarked in terms of intrinsic bulk resistivity and electromigration.
  Address
  Corporate Author Thesis
  Publisher Ieee Place of Publication New york Editor
  Language Wos Publication Date 0000-00-00
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 978-1-4799-5018-8 ISBN Additional Links UA library record; WoS full record;
  Impact Factor Times cited Open Access
  Notes Approved Most recent IF: NA
  Call Number UA @ lucian @ c:irua:127034 Serial 1149
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Author Verhulst, A.S.; Verreck, D.; Smets, Q.; Kao, K.-H.; Van de Put, M.; Rooyackers, R.; Sorée, B.; Vandooren, A.; De Meyer, K.; Groeseneken, G.; Heyns, M.M.; Mocuta, A.; Collaert, N.; Thean, A.V.-Y.
  Title Perspective of tunnel-FET for future low-power technology nodes Type P1 Proceeding
  Year 2014 Publication (down) 2014 Ieee International Electron Devices Meeting (iedm) Abbreviated Journal
  Volume Issue Pages
  Keywords P1 Proceeding; Condensed Matter Theory (CMT)
  Abstract
  Address
  Corporate Author Thesis
  Publisher Ieee Place of Publication New york Editor
  Language Wos Publication Date
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 978-1-4799-8000-0 ISBN Additional Links UA library record; WoS full record
  Impact Factor Times cited Open Access
  Notes Approved Most recent IF: NA
  Call Number UA @ lucian @ c:irua:144789 Serial 4679
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Author Verreck, D.; Van de Put, M.L.; Verhulst, A.S.; Sorée, B.; Magnus, W.; Dabral, A.; Thean, A.; Groeseneken, G.
  Title 15-band spectral envelope function formalism applied to broken gap tunnel field-effect transistors Type P1 Proceeding
  Year 2015 Publication (down) 18th International Workshop On Computational Electronics (iwce 2015) Abbreviated Journal
  Volume Issue Pages
  Keywords P1 Proceeding; Condensed Matter Theory (CMT)
  Abstract A carefully chosen heterostructure can significantly boost the performance of tunnel field-effect transistors (TFET). Modelling of these hetero-TFETs requires a quantum mechanical (QM) approach with an accurate band structure to allow for a correct description of band-to-band-tunneling. We have therefore developed a fully QM 2D solver, combining for the first time a full zone 15-band envelope function formalism with a spectral approach, including a heterostructure basis set transformation. Simulations of GaSb/InAs broken gap TFETs illustrate the wide body capabilities and transparant transmission analysis of the formalism.
  Address
  Corporate Author Thesis
  Publisher Ieee Place of Publication New york Editor
  Language Wos 000380398200055 Publication Date 2015-10-26
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 978-0-692-51523-5 ISBN Additional Links UA library record; WoS full record
  Impact Factor Times cited Open Access
  Notes Approved Most recent IF: NA
  Call Number UA @ lucian @ c:irua:134998 Serial 4131
Permanent link to this record
 

 
Author Van de Put, M.L.; Vandenberghe, W.G.; Magnus, W.; Sorée, B.; Fischetti, M.V.
  Title Modeling of inter-ribbon tunneling in graphene Type P1 Proceeding
  Year 2015 Publication (down) 18th International Workshop On Computational Electronics (iwce 2015) Abbreviated Journal
  Volume Issue Pages
  Keywords P1 Proceeding; Condensed Matter Theory (CMT)
  Abstract The tunneling current between two crossed graphene ribbons is described invoking the empirical pseudopotential approximation and the Bardeen transfer Hamiltonian method. Results indicate that the density of states is the most important factor determining the tunneling current between small (similar to nm) ribbons. The quasi-one dimensional nature of graphene nanoribbons is shown to result in resonant tunneling.
  Address
  Corporate Author Thesis
  Publisher Ieee Place of Publication New york Editor
  Language Wos Publication Date
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 978-0-692-51523-5 ISBN Additional Links UA library record; WoS full record
  Impact Factor Times cited Open Access
  Notes Approved Most recent IF: NA
  Call Number UA @ lucian @ c:irua:134997 Serial 4206
Permanent link to this record
 

 
Author Lao, M.; Eisterer, M.; Stadel, O.; Meledin, A.; Van Tendeloo, G.
  Title The effect of Y2O3 and YFeO3 additions on the critical current density of YBCO coated conductors Type P1 Proceeding
  Year 2014 Publication (down) 1-4 Abbreviated Journal
  Volume Issue Pages
  Keywords P1 Proceeding; Electron microscopy for materials research (EMAT)
  Abstract The pinning mechanism of MOCVD-grown YBCO coated conductors with Y2O3 precipitates was investigated by angle-resolved transport measurement of Je in a wide range of temperature and magnetic fields. Aside from the Y2O3 nanoprecipitates, a-axis grains and threading dislocation along the c-axis were found in the YBCO layer. The Y2O3 precipitates are less effective pinning centers at lower temperature. The tapes with precipitates show a higher anisotropy with larger J(c) at H parallel to ab than H parallel to c. This behavior was attributed to the preferred alignment of the nanoprecipitates along the ab-plane.
  Address
  Corporate Author Thesis
  Publisher Iop publishing ltd Place of Publication Bristol Editor
  Language Wos 000350818300068 Publication Date 2014-05-12
  Series Editor Series Title Abbreviated Series Title
  Series Volume 507 Series Issue Edition
  ISSN 1742-6596; ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor Times cited 1 Open Access
  Notes eurotapes Approved Most recent IF: NA
  Call Number UA @ lucian @ c:irua:125444 Serial 3577
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Author Neilson, D.; Perali, A.; Zarenia, M.
  Title Many-body electron correlations in graphene Type P1 Proceeding
  Year 2016 Publication (down) (mbt18) Abbreviated Journal
  Volume 702 Issue 702 Pages 012008
  Keywords P1 Proceeding; Condensed Matter Theory (CMT)
  Abstract The conduction electrons in graphene promise new opportunities to access the region of strong many-body electron-electron correlations. Extremely high quality, atomically flat two-dimensional electron sheets and quasi-one-dimensional electron nanoribbons with tuneable band gaps that can be switched on by gates, should exhibit new many-body phenomena that have long been predicted for the regions of phase space where the average Coulomb repulsions between electrons dominate over their Fermi energies. In electron nanoribbons a few nanometres wide etched in monolayers of graphene, the quantum size effects and the van Hove singularities in their density of states further act to enhance electron correlations. For graphene multilayers or nanoribbons in a double unit electron-hole geometry, it is possible for the many-body electron-hole correlations to be made strong enough to stabilise high-temperature electron- hole superfluidity.
  Address
  Corporate Author Thesis
  Publisher Iop publishing ltd Place of Publication Bristol Editor
  Language Wos 000389756000008 Publication Date 2016-04-29
  Series Editor Series Title Abbreviated Series Title
  Series Volume 702 Series Issue Edition
  ISSN 1742-6588; 1742-6596 ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor Times cited 3 Open Access
  Notes ; ; Approved Most recent IF: NA
  Call Number UA @ lucian @ c:irua:140268 Serial 4455
Permanent link to this record
 

 
Author Vishwakarma, M.; Thota, N.; Karakulina, O.; Hadermann, J.; Mehta, B.R.
  Title Role of graphene inter layer on the formation of the MoS2 – CZTS interface during growth Type P1 Proceeding
  Year 2018 Publication (down) (icc-2017) Abbreviated Journal
  Volume Issue Pages
  Keywords P1 Proceeding; Electron microscopy for materials research (EMAT)
  Abstract The growth of MoS2 layer near the Mo/CZTS interface during sulphurization process can have an impact on back contact cell parameters (series resistance and fill factor) depending upon the thickness or quality of MoS2. This study reports the dependence of the thickness of interfacial MoS2 layer on the growth of graphene at the interface between molybdenum back contact and deposited CZTS layer. The graphene layer reduces the accumulation of Zn/ZnS, Sn/SnO2 and formation of pores near the MoS2-CZTS interface. The use of graphene as interface layer can be potentially useful for improving the quality of Mo/MoS2/CZTS interface.
  Address
  Corporate Author Thesis
  Publisher Amer inst physics Place of Publication Melville Editor
  Language Wos 000436313003046 Publication Date 2018-05-09
  Series Editor Series Title Abbreviated Series Title
  Series Volume 1953 Series Issue Edition
  ISSN 978-0-7354-1648-2; 0094-243x; 0094-243x ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor Times cited 1 Open Access OpenAccess
  Notes ; The authors acknowledge support provided by DST project. M.V. acknowledges IIT Delhi for MHRD fellowship. Prof. B. R. Mehta acknowledges the support of the Schlumberger chair professorship. ; Approved Most recent IF: NA
  Call Number UA @ lucian @ c:irua:153203 Serial 5126
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Author Schowalter, M.; Rosenauer, A.; Lamoen, D.; Kruse, P.; Gerthsen, D.
  Title Ab initio computation of the mean inner Coulomb potential of technological important semiconductors Type A1 Journal article
  Year 2005 Publication (down) Abbreviated Journal
  Volume 1007 Issue Pages 233-236
  Keywords A1 Journal article; Electron Microscopy for Materials Science (EMAT);
  Abstract
  Address
  Corporate Author Thesis
  Publisher Place of Publication Berlin Editor
  Language Wos Publication Date 0000-00-00
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 0930-8989 ISBN Additional Links UA library record; WoS full record;
  Impact Factor Times cited Open Access
  Notes Approved Most recent IF: NA
  Call Number UA @ lucian @ c:irua:72915 Serial 32
Permanent link to this record
 

 
Author Fomin, V.M.; Devreese, J.T.; Misko, V.R.
  Title Enhancement of critical magnetic field in superconducting nanostructures Type A1 Journal article
  Year 2002 Publication (down) Abbreviated Journal
  Volume 1 Issue Pages 134-139
  Keywords A1 Journal article; Electron Microscopy for Materials Science (EMAT);
  Abstract
  Address
  Corporate Author Thesis
  Publisher Place of Publication Editor
  Language Wos Publication Date 0000-00-00
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN ISBN Additional Links UA library record
  Impact Factor Times cited Open Access
  Notes Approved Most recent IF: NA
  Call Number UA @ lucian @ c:irua:40889 Serial 1061
Permanent link to this record
 

 
Author Rosenauer, A.; Schowalter, M.; Glas, F.; Lamoen, D.
  Title First-principles calculations of 002 structure factors for electron scattering in strained InxGa1-xAs Type A1 Journal article
  Year 2005 Publication (down) Abbreviated Journal
  Volume 107 Issue Pages 151-154
  Keywords A1 Journal article; Electron Microscopy for Materials Science (EMAT);
  Abstract
  Address
  Corporate Author Thesis
  Publisher Place of Publication Berlin Editor
  Language Wos Publication Date 0000-00-00
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN 0930-8989 ISBN Additional Links UA library record; WoS full record;
  Impact Factor Times cited Open Access
  Notes Approved Most recent IF: NA
  Call Number UA @ lucian @ c:irua:72916 Serial 1202
Permanent link to this record
 

 
Author Fomin, V.M.; Misko, V.R.; Devreese, J.T.; Moshchalkov, V.V.
  Title Phase boundaries of superconducting mesoscopic square loops Type A1 Journal article
  Year 1998 Publication (down) Abbreviated Journal
  Volume 249/251 Issue Pages 476-479
  Keywords A1 Journal article; Electron Microscopy for Materials Science (EMAT);
  Abstract
  Address
  Corporate Author Thesis
  Publisher Place of Publication Editor
  Language Wos 000074919400101 Publication Date 0000-00-00
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN ISBN Additional Links UA library record; WoS full record;
  Impact Factor Times cited Open Access
  Notes Approved Most recent IF: NA
  Call Number UA @ lucian @ c:irua:21905 Serial 2577
Permanent link to this record
 

 
Author Fomin, V.M.; Misko, V.R.; Devreese, J.T.; Moshchalkov, V.V.
  Title Phase boundaries of superconducting mesoscopic square loops Type A1 Journal article
  Year 1997 Publication (down) Abbreviated Journal
  Volume Issue Pages 835-838
  Keywords A1 Journal article; Electron Microscopy for Materials Science (EMAT);
  Abstract
  Address
  Corporate Author Thesis
  Publisher Place of Publication S.l. Editor
  Language Wos Publication Date 0000-00-00
  Series Editor Series Title Abbreviated Series Title 12th International Conference on the Electronic Properties of Two-Dimensional Systems (EP2DS), Tokyo
  Series Volume Series Issue Edition
  ISSN ISBN Additional Links UA library record
  Impact Factor Times cited Open Access
  Notes Approved Most recent IF: NA
  Call Number UA @ lucian @ c:irua:20370 Serial 2578
Permanent link to this record
 

 
Author Misko, V.R.; Fomin, V.M.; Devreese, J.T.; Moshchalkov, V.V.
  Title Stability of vortex-antivortex “molecules” in mesoscopic superconducting triangles Type A1 Journal article
  Year 2005 Publication (down) Abbreviated Journal
  Volume Issue Pages 191-196
  Keywords A1 Journal article; Electron Microscopy for Materials Science (EMAT);
  Abstract We have revealed thermodynamically stable vortex-antivortex configurations in mesoscopic type I superconducting equilateral triangles. The revealed effect is explained by two factors: (i) vortex confinement in mesoscopic triangles and (ii) appearance of the vortex-antivortex repulsion in mesoscopic type I superconductor triangles in the vicinity of the dual point. The stability of the obtained solutions is examined as a function of material and external parameters – the Ginzburg-Landau parameter K and temperature – as well as a function of a distortion of the sample's shape. The vortex-antivortex. “molecule” turns out to be stable in a wide range of the parameters that makes it possible its experimental visualization.
  Address
  Corporate Author Thesis
  Publisher Place of Publication Editor
  Language Wos 000234363700030 Publication Date 2007-11-30
  Series Editor Series Title Abbreviated Series Title 3rd International Symposium on Mesoscopic Superconductivity and, Spintronics, MAR 01-04, 2004, Atsug
  Series Volume Series Issue Edition
  ISSN ISBN Additional Links UA library record; WoS full record;
  Impact Factor Times cited Open Access
  Notes Approved Most recent IF: NA
  Call Number UA @ lucian @ c:irua:103704 Serial 3134
Permanent link to this record
 

 
Author Devreese, J.T.; Fomin, V.M.; Misko, V.R.; Moshchalkov, V.V.
  Title Superconducting mesoscopic square loops: phase boundaries and magnetization Type A1 Journal article
  Year 1998 Publication (down) Abbreviated Journal
  Volume 1/2 Issue Pages 33-38
  Keywords A1 Journal article; Electron Microscopy for Materials Science (EMAT);
  Abstract
  Address
  Corporate Author Thesis
  Publisher Place of Publication Editor
  Language Wos 000072938400006 Publication Date 0000-00-00
  Series Editor Series Title Abbreviated Series Title
  Series Volume Series Issue Edition
  ISSN ISBN Additional Links UA library record; WoS full record; WoS citing articles
  Impact Factor Times cited 1 Open Access
  Notes Approved Most recent IF: NA
  Call Number UA @ lucian @ c:irua:21901 Serial 3355
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