|
|
“The polaron-bipolaron transition for acoustical three-dimensional polarons”. da Costa WB, Peeters FM, Journal of physics : condensed matter 8, 2173 (1996). http://doi.org/10.1088/0953-8984/8/13/009
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 2.346
Times cited: 10
DOI: 10.1088/0953-8984/8/13/009
|
|
|
|
“Symmetry breaking of the admittance of a classical two-dimensional electron system in a magnetic field”. Sommerfeld PKH, van der Heijden RW, Peeters FM, Physical review : B : condensed matter and materials physics 53, R13250 (1996). http://doi.org/10.1103/PhysRevB.53.R13250
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 3.736
Times cited: 7
DOI: 10.1103/PhysRevB.53.R13250
|
|
|
|
“Electronic structure of a Si \delta-doped layer in a GaAs/AlxGa1-xAs/GaAs quantum barrier”. Shi JM, Koenraad PM, van de Stadt AFW, Peeters FM, Devreese JT, Wolter JH, Physical Review B 54, 7996 (1996). http://doi.org/10.1103/PhysRevB.54.7996
Abstract: We present a theoretical study of the electronic structure of a heavily Si delta-doped layer in a GaAs/AlxGa1-xAs/GaAs quantum barrier. In this class of structures the effect of DX centers on the electronic properties can be tuned by changing the AlxGa1-xAs barrier width and/or the Al concentration, which leads to a lowering of the DX level with respect to the Fermi energy without disturbing the wave functions much. A self-consistent approach is developed in which the effective confinement potential and the Fermi energy of the system, the energies, the wave functions, and the electron densities of the discrete subbands have been obtained as a function of both the material parameters of the samples and the experimental conditions. The effect of DX centers on such structures at nonzero temperature and under an external pressure is investigated for three different models: (1) the DX(nc)(0) model with no correlation effects, (2) the d(+)/DX(0) model, and (3) the d(+)/DX(-) model with inclusion of correlation effects. In the actual calculation, influences of the background accepters, the discontinuity of the effective mass of the electrons at the interfaces of the different materials, band nonparabolicity, and the exchange-correlation energy of the electrons have been taken into account. We have found that (1) introducing a quantum barrier into delta-doped GaAs makes it possible to control the energy gaps between different electronic; subbands; (2) the electron wave functions are mon spread out when the repellent effect of the barriers is increased as compared to those in delta-doped GaAs; (3) increasing the quantum-barrier height and/or the application of hydrostatic pressure are helpful to experimentally observe the effect of the DX centers through a decrease of the total free-electron density; and (4) the correlation effects of the charged impurities are important for the systems under study.
Keywords: A1 Journal article; Condensed Matter Theory (CMT); Theory of quantum systems and complex systems
Impact Factor: 3.736
Times cited: 11
DOI: 10.1103/PhysRevB.54.7996
|
|
|
|
“Properties of two-dimensional Coulomb clusters confined in a ring”. Schweigert IV, Schweigert VA, Peeters FM, Physical review : B : condensed matter and materials physics 54, 10827 (1996). http://doi.org/10.1103/PhysRevB.54.10827
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 3.736
Times cited: 27
DOI: 10.1103/PhysRevB.54.10827
|
|
|
|
“Two electron quantum disks”. Peeters FM, Schweigert VA, Physical review : B : condensed matter and materials physics 53, 1468 (1996). http://doi.org/10.1103/PhysRevB.53.1468
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 3.736
Times cited: 204
DOI: 10.1103/PhysRevB.53.1468
|
|
|
|
“Microscopic theory of the rhombohedral phase and transition to the monoclinic phase of solid C70”. Nikolaev AV, Michel KH, Physical review : B : condensed matter and materials physics 54, 12733 (1996). http://doi.org/10.1103/PhysRevB.54.12733
Abstract: Starting from a model of microscopic interactions between C-70 molecules, we have developed a theory which describes the orientational dynamics and its coupling to lattice displacements in the rhombohedral phase of C-70 fullerite. The Landau free energy is calculated. We obtain a first-order phase transition to a monoclinic structure with the space group P2(1)/m. The transition is driven by the condensation of orientational quadrupoles at the F point of the Brillouin zone of the rhombohedral lattice. We find no evidence that the monoclinic structure is connected with the freezing in of orientations around the fivefold molecular axis. We calculate the lattice strains that are associated with the transition to the monoclinic structure. The theory is compared with a range of experimental data on the phase transition.
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 3.736
Times cited: 5
DOI: 10.1103/PhysRevB.54.12733
|
|
|
|
“Vortex structure around a magnetic dot in planar superconductors”. Marmorkos IK, Matulis A, Peeters FM, Physical review : B : condensed matter and materials physics 53, 2677 (1996). http://doi.org/10.1103/PhysRevB.53.2677
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 3.736
Times cited: 58
DOI: 10.1103/PhysRevB.53.2677
|
|
|
|
“Microscopic origin of dimerization in the CuO2 chains in Sr14Cu24O41”. Hiroi Z, Amelinckx S, Van Tendeloo G, Kobayashi N, Physical review : B : condensed matter and materials physics 54, 849 (1996). http://doi.org/10.1103/PhysRevB.54.15849
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 3.736
Times cited: 33
DOI: 10.1103/PhysRevB.54.15849
|
|
|
|
“Impurity band and magnetic-field-induced metal-insulator transition in a doped GaAs/AlxGa1-xAs superlattice”. Hilber W, Helm M, Peeters FM, Alavi K, Pathak RN, Physical review : B : condensed matter and materials physics 53, 6919 (1996). http://doi.org/10.1103/PhysRevB.53.6919
Abstract: A combination of infrared spectroscopy and magnetotransport is used to investigate the impurity band and the magnetic-field-induced metal-insulator transition in n-type GaAs/AlxGa1-xAs superlattices. The dropping of the Fermi level from the conduction band into the impurity band upon increasing magnetic field is observed in a sample doped to n=4n(c), where n(c) is the critical density according to the Mott criterion. The metal-insulator transition takes place while the Fermi level is in the impurity band, with no qualitative change from the metallic to the insulating side. Due to the anisotropy of the superlattice band structure, the metal-insulator transition is shifted to higher magnetic field, when the magnetic field is tilted away from the growth axis towards the layer planes.
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 3.736
Times cited: 14
DOI: 10.1103/PhysRevB.53.6919
|
|
|
|
“Magneto-polaron effect on shallow indium donors in CdTe”. Grynberg M, Huant S, Martinez G, Kossut J, Wojtowicz T, Karczewski G, Shi JM, Peeters FM, Devreese JT, Physical review : B : condensed matter and materials physics 54, 1467 (1996). http://doi.org/10.1103/PhysRevB.54.1467
Keywords: A1 Journal article; Condensed Matter Theory (CMT); Theory of quantum systems and complex systems
Impact Factor: 3.736
Times cited: 33
DOI: 10.1103/PhysRevB.54.1467
|
|
|
|
“Stability, dynamical properties and melting of a classical bi-layer Wigner crystal”. Goldoni G, Peeters FM, Physical review : B : condensed matter and materials physics 53, 4591 (1996). http://doi.org/10.1103/PhysRevB.53.4591
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 3.736
Times cited: 117
DOI: 10.1103/PhysRevB.53.4591
|
|
|
|
“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
|
|
|
|
“Experimental determination of the Fermi surface of thin Sc1-xErxAs epitaxial layers in pulsed magnetic fields”. Bogaerts R, Herlach F, de Keyser A, Peeters FM, DeRosa F, Palmstrøm CJ, Brehmer D, Allen SJ, Physical review : B : condensed matter and materials physics 53, 15951 (1996). http://doi.org/10.1103/PhysRevB.53.15951
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 3.736
Times cited: 9
DOI: 10.1103/PhysRevB.53.15951
|
|
|
|
“An electron microscopic study of highly oriented undoped and FeCl3-doped poly (p-phenylenevinylene)”. Zhang XB, Van Tendeloo G, van Landuyt J, van Dyck D, Briers J, Bao Y, Geise HJ, Macromolecules 29, 1554 (1996). http://doi.org/10.1021/ma9513067
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT); Vision lab
Impact Factor: 5.8
Times cited: 10
DOI: 10.1021/ma9513067
|
|
|
|
“Chemical characterization of individual aerosol particles in Central Siberia”. van Malderen H, Van Grieken R, Bufetov NV, Koutzenogii KP, Environmental science and technology 30, 312 (1996). http://doi.org/10.1021/ES950402K
Keywords: A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
DOI: 10.1021/ES950402K
|
|
|
|
“Identification of individual aerosol particles containing Cr, Pb, and Zn above the North Sea”. van Malderen H, Hoornaert S, Van Grieken R, Environmental science and technology 30, 489 (1996). http://doi.org/10.1021/ES950205L
Abstract: Aerosol samples have been collected over the southern bight of the North Sea from an aircraft. In this way, 96 samples were taken for single-particle analysis during 16 flights. Almost 45 000 individual particles were analyzed with electron probe X-ray microanalysis. More than 5000 of these were found to contain significant concentrations of one or more of the heavy metals Cr, Pb, and Zn. With the help of hierarchical, nonhierarchical, and fuzzy clustering techniques, various heavy metal-containing particle types could be identified. Significant differences in abundances were detected in the North Sea heavy metal aerosol, depending on the origin of the air masses. In samples with continental influence 50 times more Zn- and Pb-containing particles were found than in samples with a marine history. For Cr, on the other hand, we found abundances in the marine sector that were one-third of the values for continental sectors. This might point to a rather undefined marine source, which could be the recycling of previously deposited material by reinjection into the atmosphere by sea spray. The highest values for Cr-, Pb-, and Zn-containing particles were always detected under southeastern wind directions.
Keywords: A1 Journal article; Engineering sciences. Technology; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
DOI: 10.1021/ES950205L
|
|
|
|
“HREM investigation of martensite precursor effects and stacking sequences in Ni-Mn-Ti alloys”. Schryvers D, Lahjouji DE, Slootmaekers B, Potapov PL, Scripta metallurgica et materialia 35, 1235 (1996). http://doi.org/10.1016/1359-6462(96)00271-0
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 3.224
Times cited: 2
DOI: 10.1016/1359-6462(96)00271-0
|
|
|
|
“Direct current glow discharge mass spectrometric analysis of Macor ceramic using a secondary cathode”. Schelles W, Van Grieken R, Analytical chemistry 68, 3570 (1996). http://doi.org/10.1021/AC960441U
Keywords: A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
DOI: 10.1021/AC960441U
|
|
|
|
“Microstructural and physical properties of layered manganite oxides related to the magnetoresistive perovskites”. Laffez P, Van Tendeloo G, Seshadri R, Hervieu M, Martin C, Maignan A, Raveau B, Journal of applied physics 80, 5850 (1996). http://doi.org/10.1063/1.363578
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 2.183
Times cited: 36
DOI: 10.1063/1.363578
|
|
|
|
“Gypsum and other calcium-rich particles above the North Sea”. Hoornaert S, van Malderen H, Van Grieken R, Environmental science and technology 30, 1515 (1996). http://doi.org/10.1021/ES9504350
Abstract: Ca-containing particles, especially CaSO4 particles, have been encountered in several atmospheric aerosol studies. An overview is given of the different sources of airborne Ca-containing particles, The North Sea atmosphere is studied to identify the different Ca-containing particle types and to find the correlation between their occurrence and the source regions of the corresponding air masses. About 50000 individual aerosol samples were collected above the Southern Eight of the North Sea for several wind directions and analyzed for their composition using electron probe X-ray microanalysis. Nonhierarchical cluster analysis is performed on the data to reveal the different particle types, their relative abundances and their sources. CaSO4 in most cases constitutes the largest fraction of the Ca-containing particles. Extremely high numbers of CaSO4 particles are found for northeastern winds, coming from the central part of Germany, suggesting that a great fraction is derived from anthropogenic sources located in this region. Among the other Ca-containing particle types are the aluminosilicates, CaCO3, Fe-Ca-rich particles, and CaSO4 or CaCO3 in combination with NaCl.
Keywords: A1 Journal article; Engineering sciences. Technology; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
DOI: 10.1021/ES9504350
|
|
|
|
“Intersubband-coupling and screening effects on the electron transport in a quasi-two-dimensional δ-doped semiconductor system”. Hai G-Q, Studart N, Peeters FM, Koenraad PM, Wolter JH, Journal of applied physics 80, 5809 (1996). http://doi.org/10.1063/1.363573
Abstract: The effects due to intersubband coupling and screening on the ionized impurity scattering are studied for a quasi-two-dimensional electron system in delta-doped semiconductors. We found that intersubband coupling plays an essential role in describing the screening properties and the effect of ionized impurity scattering on the mobility in a multisubband system. At the onset of the occupation of a higher subband, the screening due to the intersubband coupling leads to a reduction of the small angle scattering rate in the lower subband. We showed that such an effect is significant in a delta-doped quantum well and results in a pronounced increase of the quantum mobility at the onset of the occupation of a higher subband. (C) 1996 American Institute of Physics.
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 2.183
Times cited: 40
DOI: 10.1063/1.363573
|
|
|
|
“Stability and dynamical properties of a double-layer Wigner crystal in two dimensions”. Goldoni G, Schweigert V, Peeters FM, Surface science : a journal devoted to the physics and chemistry of interfaces 361/362, 163 (1996). http://doi.org/10.1016/0039-6028(96)00359-7
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 1.925
Times cited: 4
DOI: 10.1016/0039-6028(96)00359-7
|
|
|
|
“Structural characterisation of erbium silicide thin films of an Si(111) substrate”. Frangis N, Van Tendeloo G, van Landuyt J, Muret P, Nguyen TTA, Journal of alloys and compounds 234, 244 (1996). http://doi.org/10.1016/0925-8388(95)02131-0
Abstract: ErSi2-x films (x = 0.1-0.3) grown by co-evaporation at different deposition ratios have been characterised by transmission electron microscopy, electron diffraction and high resolution electron microscopy. A very good epitaxial growth relation with the Si substrate was deduced for a1 samples and observed phases. Different defect modulated structures are formed; they can be described as structural variants (orthorhombic or rhombohedral) of the basic structure. The modulated phases are related to deviations from stoichiometry similar to crystallographic shear structures. The ErSi1.9 material contains Si precipitates, illustrating the preference for the ErSi1.7 composition to be maintained.
Keywords: A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT)
Impact Factor: 2.999
Times cited: 14
DOI: 10.1016/0925-8388(95)02131-0
|
|
|
|
“Electron microscopy and Rutherford backscattering spectrometry characterisation of 6H SiC samples implanted with He+”. Frangis N, van Landuyt J, Grimaldi MG, Calcagno L, Nuclear instruments and methods in physics research: B: beam interactions with materials and atoms
T2 –, Symposium 1 on New Trends in Ion Beam Processing of Materials, at the, E-MRS 96 Spring Meeting, June 04-07, 1996, Strasbourg, France 120, 186 (1996). http://doi.org/10.1016/S0168-583X(96)00506-X
Abstract: 6H SiC single crystals were implanted al room temperature with 1 MeV He+ up to a fluence of 2 x 10(17) at./cm(2) RBS-channeling analysis with a 2 MeV He+ beam indicated the formation of extended defects or the generation of point defects at a constant concentration over a depth of about 1 mu m. Electron microscopy characterisation revealed the presence of two amorphous buried layers at depths of about 1,75 and 4.8 mu m. They an due to the implantation and to the analysing RES beam, respectively, No extended planar or linear faults were found in the region between the surface and the first amorphous layer. However, at the surface, a 50 nm thick amorphous layer was observed in which crystalline inclusions were embedded. Electron diffraction and HREM data of the inclusions were typical for diamond, These inclusions were even found in the crystalline SiC material below this layer, however at a reduced density.
Keywords: A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT)
Impact Factor: 1.124
Times cited: 2
DOI: 10.1016/S0168-583X(96)00506-X
|
|
|
|
“Ion beam synthesis of \beta-SiC at 950 degrees C and structural characterization”. Frangis N, Nejim A, Hemment PLF, Stoemenos J, van Landuyt J, Nuclear instruments and methods in physics research: B: beam interactions with materials and atoms
T2 –, Symposium J on Correlated Effects in Atomic and Cluster Ion Bombardment and Implantation/Symposium C on Pushing the Limits of Ion Beam, Processing –, Fr 112, 325 (1996). http://doi.org/10.1016/0168-583X(95)01236-2
Abstract: The structure of beta-SiC formed by carbon implantation into Si at high temperatures (850-950 degrees C) at doses ranging between 0.2 X 10(18) to 1 X 10(18) cm(-2) at 200 keV, was studied by combined cross section and high resolution transmission electron microscopy (XTEM and HRTEM). Implantation was performed on (001) and (111) Si wafers. In both cases a buried beta-SiC layer was formed having the same orientation as the Si matrix.
Keywords: A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT)
Impact Factor: 1.124
Times cited: 9
DOI: 10.1016/0168-583X(95)01236-2
|
|
|
|
“Observation of vacancy clustering in FZ-Si crystals during in situ electron irradiation in a high voltage electron microscope”. Fedina L, van Landuyt J, Vanhellemont J, Aseev AL, Nuclear instruments and methods in physics research B112, 133 (1996). http://doi.org/10.1016/0168-583X(95)01277-X
Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)
Impact Factor: 1.124
Times cited: 4
DOI: 10.1016/0168-583X(95)01277-X
|
|
|
|
“Structural transitions in a finite classical two-dimensional system”. Farias GA, Peeters FM, Solid state communications 100, 711 (1996). http://doi.org/10.1016/0038-1098(96)00438-3
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 1.897
Times cited: 25
DOI: 10.1016/0038-1098(96)00438-3
|
|
|
|
“Interplay of 2D and 3D charge carriers in Si-δ-doped InSb layers grown epitaxially on GaAs”. de Keyser A, Bogaerts R, Karavolas VC, van Bockstal L, Herlach F, Peeters FM, van de Graaf W, Borghs G, Solid state electronics 40, 395 (1996). http://doi.org/10.1016/0038-1101(96)84617-X
Keywords: A1 Journal article; Condensed Matter Theory (CMT)
Impact Factor: 1.504
Times cited: 2
DOI: 10.1016/0038-1101(96)84617-X
|
|
|
|
“Micro-analysis of museum aerosols to elucidate the soiling of paintings: case of the Correr Museum, Venice, Italy”. de Bock LA, Van Grieken RE, Camuffo D, Grime GW, Environmental science and technology 30, 3341 (1996). http://doi.org/10.1021/ES9602004
Keywords: A1 Journal article; AXES (Antwerp X-ray Analysis, Electrochemistry and Speciation)
DOI: 10.1021/ES9602004
|
|
|
|
“Two-dimensional model of a direct current glow discharge: description of the electrons, argon ions and fast argon atoms”. Bogaerts A, Gijbels R, Goedheer WJ, Analytical chemistry 68, 2296 (1996). http://doi.org/10.1021/ac9510651
Keywords: A1 Journal article; Plasma Lab for Applications in Sustainability and Medicine – Antwerp (PLASMANT)
Impact Factor: 5.636
Times cited: 70
DOI: 10.1021/ac9510651
|
|
