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“Electron-hole superfluidity in strained Si/Ge type II heterojunctions”. Conti S, Saberi-Pouya S, Perali A, Virgilio M, Peeters FM, Hamilton AR, Scappucci G, Neilson D, npj Quantum Materials 6, 41 (2021). http://doi.org/10.1038/S41535-021-00344-3
Abstract: Excitons are promising candidates for generating superfluidity and Bose-Einstein condensation (BEC) in solid-state devices, but an enabling material platform with in-built band structure advantages and scaling compatibility with industrial semiconductor technology is lacking. Here we predict that spatially indirect excitons in a lattice-matched strained Si/Ge bilayer embedded into a germanium-rich SiGe crystal would lead to observable mass-imbalanced electron-hole superfluidity and BEC. Holes would be confined in a compressively strained Ge quantum well and electrons in a lattice-matched tensile strained Si quantum well. We envision a device architecture that does not require an insulating barrier at the Si/Ge interface, since this interface offers a type II band alignment. Thus the electrons and holes can be kept very close but strictly separate, strengthening the electron-hole pairing attraction while preventing fast electron-hole recombination. The band alignment also allows a one-step procedure for making independent contacts to the electron and hole layers, overcoming a significant obstacle to device fabrication. We predict superfluidity at experimentally accessible temperatures of a few Kelvin and carrier densities up to similar to 6 x 10(10) cm(-2), while the large imbalance of the electron and hole effective masses can lead to exotic superfluid phases.
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Times cited: 9
DOI: 10.1038/S41535-021-00344-3
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“Floquet engineering of axion and high-Chern number phases in a topological insulator under illumination”. Shafiei M, Fazileh F, Peeters FM, Milošević, MV, SciPost Physics Core 7, 024 (2024). http://doi.org/10.21468/SCIPOSTPHYSCORE.7.2.024
Abstract: Quantum anomalous Hall, high-Chern number, and axion phases in topological insulators are characterized by its Chern invariant C (respectively, C = 1, integer C > 1, and C = 0 with half-quantized Hall conductance of opposite signs on top and bottom surfaces). They are of recent interest because of novel fundamental physics and prospective applications, but identifying and controlling these phases has been challenging in practice. Here we show that these states can be created and switched between in thin films of Bi2Se3 by Floquet engineering, using irradiation by circularly polarized light. We present the calculated phase diagrams of encountered topological phases in Bi2Se3, as a function of wavelength and amplitude of light, as well as sample thickness, after properly taking into account the penetration depth of light and the variation of the gap in the surface states. These findings open pathways towards energy-efficient optoelectronics, advanced sensing, quantum information processing and metrology.
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
DOI: 10.21468/SCIPOSTPHYSCORE.7.2.024
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“Acoustical polarons and bipolarons in two dimensions”. Farias GA, da Costa WB, Peeters FM, Physical review : B : condensed matter and materials physics 54, 12835 (1996). http://doi.org/10.1103/PhysRevB.54.12835
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 3.736
Times cited: 30
DOI: 10.1103/PhysRevB.54.12835
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“Asymptotic expansions in the path integral approach to the bipolaron problem”. Smondyrev MA, Devreese JT, Peeters FM, Physical review : B : condensed matter and materials physics 51, 15008 (1995). http://doi.org/10.1103/PhysRevB.51.15008
Keywords: A1 Journal article; Condensed Matter Theory (CMT); Theory of quantum systems and complex systems
Impact Factor: 3.736
Times cited: 32
DOI: 10.1103/PhysRevB.51.15008
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“Binding energy of the barbell exciton”. Peeters FM, Golub JE, Physical review : B : condensed matter and materials physics 43, 5159 (1991)
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 3.736
Times cited: 27
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“Bloch and localized electrons in semiconductor superlattices”. Helm M, Hilber W, Fromherz T, Peeters FM, Alavi K, Pathak RN, Semiconductor science and technology 9, 1989 (1994). http://doi.org/10.1088/0268-1242/9/11S/022
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 2.19
Times cited: 1
DOI: 10.1088/0268-1242/9/11S/022
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“Charged-impurity correlations in a δ-doped quantum barrier”. Koenraad PM, Shi JM, van de Stadt AFW, Smets A, Perenboom JAAJ, Peeters FM, Devreese JT, Wolter JH, , 2351 (1996)
Keywords: P3 Proceeding; Condensed Matter Theory (CMT); Theory of quantum systems and complex systems
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“Classical two-dimensional atoms”. Peeters FM, Schweigert VA, Bedanov VM, Physica: B : condensed matter 710, 237 (1995). http://doi.org/10.1016/0921-4526(95)00038-B
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 1.319
Times cited: 31
DOI: 10.1016/0921-4526(95)00038-B
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“Collapse of high field magnetophonon resonance in GaAs-GaAlAs heterojunctions”. Leadley DR, Nicholas RJ, Singleton J, Xu W, Peeters FM, Devreese JT, Perenboom JAAJ, van Bockstal L, Herlach F, Harris JJ, Foxon CT, Physical review letters 73, 589 (1994). http://doi.org/10.1103/PhysRevLett.73.589
Keywords: A1 Journal article; Condensed Matter Theory (CMT); Theory of quantum systems and complex systems
Impact Factor: 7.512
Times cited: 24
DOI: 10.1103/PhysRevLett.73.589
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“Composite fermions in tilded magnetic fields and the effect of the confining potential width on the composite fermion effective mass”. Gee PJ, Peeters FM, Singleton J, Uji S, Aoki H, Foxon CTB, Harris JJ, Physical review : B : condensed matter and materials physics 54, R14313 (1996)
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 3.736
Times cited: 15
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“Cyclotron-resonance of 2D electrons at Si-δ-doped InSb layers grown on GaAs”. van Bockstal L, Mahy M, de Keyser A, Hoeks W, Herlach F, Peeters FM, van de Graaf W, Borghs G, Physica: B : condensed matter 211, 455 (1995)
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 1.319
Times cited: 2
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“Cyclotron-resonance of 2d electrons at Si-\delta-doped InSb layers grown on GaAs”. Van Bockstal L, Mahy M, de Keyser A, Hoeks W, Herlach F, Peeters FM, Van de Graaf W, Borghs G, Physica: B : condensed matter 211, 466 (1995). http://doi.org/10.1016/0921-4526(94)01095-I
Abstract: Cyclotron resonance (CR) of the electrons accumulated at sheets with heavy Si doping in InSb were observed using far infrared radiation. The angular dependence of the CR follows closely the 1/cos theta behaviour with some small deviations at high angles attributed to coupling between subbands. From the effective mass of the lowest subband, which is found to be 0.027m(o), the bottom of the lowest subband was determined to lie 125 meV below the Fermi level.
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 1.319
Times cited: 2
DOI: 10.1016/0921-4526(94)01095-I
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“Cyclotron resonance of both magnetopolaron branches for polar and neutral optic phonon coupling in the layer compound InSe”. Nicholas RJ, Watts M, Howell DF, Peeters FM, Wu XG, Devreese JT, van Bockstal L, Herlach F, Langerak CJGM, Singleton J, Chevy A, Pysical review: B 45, 12144 (1992). http://doi.org/10.1103/PhysRevB.45.12144
Keywords: A1 Journal article; Condensed Matter Theory (CMT); Theory of quantum systems and complex systems
Impact Factor: 3.736
Times cited: 21
DOI: 10.1103/PhysRevB.45.12144
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“Destruction of magnetophonon resonance in high mobility heterojunctions from competition between elastic and inelastic scattering”. Xu W, Leadley DR, Peeters FM, Devreese JT, Nicholas RJ, Harris JJ, Foxon CT, Proceedings of the International Conference on the Physics of Semiconductors 22, 839 (1994)
Keywords: P3 Proceeding; Condensed Matter Theory (CMT); Theory of quantum systems and complex systems
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“Diagonalization of the generalized Feynman bipolaron model in a magnetic field”. da Costa WB, Peeters FM, Journal of physics : condensed matter 7, 1293 (1995). http://doi.org/10.1088/0953-8984/7/7/011
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 2.346
Times cited: 18
DOI: 10.1088/0953-8984/7/7/011
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“Diffusion-to-streaming transition in a two-dimensional electron system in a polar semiconductor”. Xu W, Peeters FM, Devreese JT, Physical review : B : condensed matter and materials physics 43, 14134 (1991)
Keywords: A1 Journal article; Condensed Matter Theory (CMT); Theory of quantum systems and complex systems
Impact Factor: 3.736
Times cited: 24
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“Direct Coulomb and phonon-mediated coupling between spatially separated electron gases”. Tso HC, Vasilopoulos P, Peeters FM, Physical review letters 68, 2516 (1992). http://doi.org/10.1103/PhysRevLett.68.2516
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 7.512
Times cited: 106
DOI: 10.1103/PhysRevLett.68.2516
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“Dispersion of longitudinal plasmons for a quasi-two-dimensional electron gas”. Backes WH, Peeters FM, Brosens F, Devreese JT, Physical review : B : condensed matter and materials physics 45, 8437 (1992). http://doi.org/10.1103/PhysRevB.45.8437
Abstract: Confinement of electrons in ultrathin metallic films leads to subbands. By increasing the thickness of the electron layer, the subbands will dissolve into a quasicontinuum, with the number of electrons per unit volume kept constant. Within the random-phase approximation, the two-dimensional plasmon, which originally follows Stern's dispersion relation, becomes a longitudinal surface plasmon. The plasmon excitations of a model metallic film are investigated by including all subbands. Single-particle excitations, which exhibit the depolarization shift, converge into the plasma excitation spectrum. With further increases in the film thickness, the bulk plasmon arises and the surface plasmon remains. Our analysis shows how quantum size effects evolve into hydrodynamical classical size effects with increasing thickness of the film.
Keywords: A1 Journal article; Condensed Matter Theory (CMT); Theory of quantum systems and complex systems
Impact Factor: 3.736
Times cited: 37
DOI: 10.1103/PhysRevB.45.8437
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“Donor transition energy in GaAs-superlattices in a magnetic field along the growth axis”. Shi JM, Peeters FM, Hai GQ, Devreese JT, Physical review : B : condensed matter and materials physics 44, 5692 (1991)
Keywords: A1 Journal article; Condensed Matter Theory (CMT); Theory of quantum systems and complex systems
Impact Factor: 3.736
Times cited: 78
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“Dynamics of a finite classical two-dimensional system”. Schweigert VA, Peeters FM, Superlattices and microstructures 16, 243 (1994). http://doi.org/10.1016/S0749-6036(09)80007-4
Abstract: The spectral properties of a classical two-dimensional (2D) cluster of charged particles which are confined by a quadratic potential are calculated. Using the method of Newton optimization we obtain the ground state and the metastable states. For a given configuration the eigenvectors and eigenfrequencies for the normal modes are obtained using the Householder diagonalization technique for the dynamical matrix whose elements are the second derivative of the potential energy. For small clusters the lowest excitation corresponds to an intershell rotation. Magic numbers are associated to clusters which are most stable against intershell rotation. For large clusters the lowest excitation is a vortex/anti-vortex pair.
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 2.097
Times cited: 4
DOI: 10.1016/S0749-6036(09)80007-4
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“Effects of confinement in strongly-coupled superlattices on impurity bound magneto-polarons”. Shi JM, Peeters FM, Devreese JT, Cheng J-P, Kono J, McCombe BD, Proceedings of the International Conference on the Physics of Semiconductors 22, 2267 (1994)
Keywords: P3 Proceeding; Condensed Matter Theory (CMT); Theory of quantum systems and complex systems
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“Effects of DX centers on electronic structure of a ?-doped quantum barrier”. Shi JM, Koenraad PM, van de Stadt AFW, Peeters FM, Devreese JT, Wolter JH, , 2355 (1996)
Keywords: P3 Proceeding; Condensed Matter Theory (CMT); Theory of quantum systems and complex systems
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“Effects of the DX centers on electronic structure of a δ-doped quantum barrier”. Shi JM, Koenraad PM, van de Stadt AFW, Peeters FM, Devreese JT, Wolter JH, , 2355 (1996)
Keywords: P3 Proceeding; Condensed Matter Theory (CMT); Theory of quantum systems and complex systems
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“Electron capture in GaAs quantum wells via electron-electron and optic phonon scattering”. Kálna K, Mo×ko M, Peeters FM, Applied physics letters 68, 117 (1996)
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 3.302
Times cited: 10
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“Electron correlation effects in quantum dots”. Matulis A, Peeters FM, , 1875 (1995)
Keywords: P3 Proceeding; Condensed Matter Theory (CMT)
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“Electron-electron scattering induced capture in GaAs quantum wells”. Kálna K, Mo×ko M, Peeters FM, Lithuanian journal of physics 35, 435 (1995)
Keywords: A3 Journal article; Condensed Matter Theory (CMT)
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“Electron-mobility in 2 coupled delta-layers”. Hai, Studart, Peeters FM, Physical review : B : condensed matter and materials physics 52, 11273 (1995). http://doi.org/10.1103/PhysRevB.52.11273
Abstract: The low-temperature transport properties are studied for electrons confined in delta-doped semiconductor structures with two sheets in parallel. The subband quantum mobility and transport mobility are calculated numerically for the Si delta-doped GaAs systems. The effect of coupling of the two delta layers on the electron transport is investigated. Our calculations are in good agreement with experimental results.
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 3.736
Times cited: 25
DOI: 10.1103/PhysRevB.52.11273
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“Electron mobility in Si delta doped GaAs”. Koenraad PM, van de Stadt AFW, Hai GQ, Shi JM, Vansant P, Peeters FM, Devreese JT, Perenboom JAAJ, Wolter JH, Physica: B : condensed matter 211, 462 (1995). http://doi.org/10.1016/0921-4526(94)01094-H
Keywords: A1 Journal article; Condensed Matter Theory (CMT); Theory of quantum systems and complex systems
Impact Factor: 1.319
Times cited: 9
DOI: 10.1016/0921-4526(94)01094-H
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“Electron mobility in Si delta-doped GaAs”. Hai GQ, Studart N, Peeters FM, Devreese JT, Koenraad PM, van de Stadt AFW, Wolter JH, Proceedings of the International Conference on the Physics of Semiconductors 22, 823 (1994)
Keywords: P3 Proceeding; Condensed Matter Theory (CMT); Theory of quantum systems and complex systems
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“Electron mobility in two coupled &delta, layers”. Hai GQ, Studart N, Peeters FM, Physical review : B : condensed matter and materials physics 52, 11273 (1995)
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 3.736
Times cited: 24
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