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  • 1
    Online Resource
    Online Resource
    New York, NY :Springer,
    Keywords: Electron gas-Congresses. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (444 pages)
    Edition: 1st ed.
    ISBN: 9781461319078
    Series Statement: Nato asi Subseries B: Series ; v.157
    Language: English
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  • 2
    Online Resource
    Online Resource
    New York, NY :Springer,
    Keywords: Exciton theory-Congresses. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (483 pages)
    Edition: 1st ed.
    ISBN: 9781461326939
    Series Statement: Nato asi Subseries B: Series ; v.127
    DDC: 530.4/1
    Language: English
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  • 3
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 79 (1996), S. 1151-1156 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We present a theoretical investigation of the influence of a non-reacted Si layer on the transport and optical properties of CoSi2/Si1−xGex Schottky barrier diodes grown from Co/Si/Si1−xGex systems. The presence of this layer reduces the effect of the lowering of the Schottky barrier height which would be expected in a CoSi2/Si1−xGex. However, due to the small thickness of this Si layer, the charge carriers are able to tunnel through it. This tunneling process allows for a significant lowering of the Schottky barrier height and therefore an extension of the detection regime into the infrared. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Macromolecules 10 (1977), S. 1164-1166 
    ISSN: 1520-5835
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 92 (2002), S. 2006-2012 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Two-dimensional electron gas systems patterned into micrometer Hall bars can be used as Hall magnetosensors. In this way, ballistic Hall probes have already been studied and used successfully. Here, the response function of a Hall sensor is determined in the diffusive regime, which allows this device to be used as a magnetosensor for the determination of inhomogeneous magnetic field distributions. Furthermore, the influence of the geometry of the Hall bar on this response function, such as circular corners and asymmetry in the probes, is also investigated and appears to be non-negligible. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 87 (2000), S. 8088-8092 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We study the temperature dependent Hall resistance RH of a new magnetoelectronic device consisting of a micron scale Hall cross which is subjected to the fringe field of a ferromagnetic film with in-plane magnetization, placed on top of it. External application of a weak in plane magnetic field yields reversing of the magnetization and consequently modulates RH. Starting from the continuity equation, we calculate numerically the steady state electrical potential and current distributions in the Hall device and show that the temperature dependency can be well understood in the diffusive regime. We make a detailed investigation of the influence of different parameters on the output of this device. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 88 (2000), S. 5246-5251 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We investigate theoretically the electronic structure of InxGa1−xAs/GaAs near-surface quantum wells within the framework of the effective mass theory. We found that the energies of electron and hole states depend sensitively on the capped layer thickness, and the Stark shift is asymmetric with respect to the applied electric field, i.e., the blueshifts or redshifts are determined by the direction and the strength of the electric field. The asymmetric Stark shift is due to the image charge effect and the Coulomb interaction. The spatial distribution of the electron and hole changes significantly when the thickness of the capped layer and the electric field is varied. The exciton binding energy is enhanced significantly by the image charge effect and decreases rapidly with increasing capped layer thickness. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 68 (1990), S. 3435-3438 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The energy levels of electrons confined to a circular quantum well with hard walls are calculated in the presence of a perpendicular magnetic field. The results are compared with the case of soft-wall confinement (parabolic potential). There are important differences in the transition energies of the magneto-optical spectrum: (i) in contrast to the parabolic case where only two transition energies are found, in the hard-wall case there are many transitions possible which have different energies. Only a small number of them however have sufficient oscillator strength to be observable; (ii) with increasing magnetic field the energies approach the two-dimensional results much faster than for the soft-wall case. In quantum dots with many electrons we calculate the Fermi energy as a function of the magnetic field.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 55 (1989), S. 1106-1108 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We show that it is possible to control the gap between the minibands of a superlattice by introducing positive barriers in the wells of the superlattice. An appropriate choice of the position, the width, and the height of these barriers achieved by standard methods can reduce or even close the minigaps of the superlattice.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 68 (1996), S. 117-119 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Electron capture times in a quantum well (QW) structure with finite electron density are calculated for electron-electron (e-e) and electron-polar optic phonon (e-pop) scattering. We find that the capture time oscillates as function of the QW width for both processes with the same period, but with very different amplitudes. For an electron density of 1011 cm−2 the e-e capture time is 101−103 times larger than the e-pop capture time except for QW widths near the resonance minima, where it is only 2−3 times larger. With increasing density the e-e capture time decreases and near the resonance becomes smaller than the e-pop capture time. Our e-e capture times are three orders larger than the results of Blom et al. [Appl. Phys. Lett. 62, 1490 (1993)]. The role of the e-e capture in QW lasers is therefore readdressed. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
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