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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 13 (1965), S. 139-143 
    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 13 (1965), S. 143-145 
    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Computer Physics Communications 38 (1985), S. 221-231 
    ISSN: 0010-4655
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Computer Science , Physics
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 71 (1992), S. 5517-5522 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Linear and nonlinear characteristics of superlattice perpendicular conduction are examined from a balance-equation theory recently developed for miniband transport [Lei, Horing, and Cui, Phys. Rev. Lett. 66, 3277 (1991)]. Analytical expressions are given for linear mobilities due to impurity and due to optic-phonon scatterings. Attention is focused on the temperature dependence of low-field miniband mobility and the behavior of drift velocity versus electric field, derived from the balance-equation theory, as well as from Esaki–Tsu and Boltzmann theories. Good qualitative agreements are obtained in comparison with experiments, but more accurate measurements are needed to appreciate the differences between these two types of theories.
    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 87 (2000), S. 6439-6441 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The magnetic order in the diluted magnetic semiconductor barrier of double AlAs/GaAs:Mn quantum well structures is investigated by Monte Carlo simulations. A confinement adapted RKKY mechanism is implemented for indirect exchange between Mn ions mediated by holes. It is shown that, depending on the barrier width and the hole concentration, a ferromagnetic or a spin-glass order can be established. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 79 (2001), S. 3305-3307 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The spin-dependent mobility for the lateral transport of the hole gas in a GaMnAs/GaAs heterostructure containing several metallic-like ferromagnetic layers is calculated. The electronic structure is obtained self-consistently taking into account the direct Coulomb Hartree and exchange-correlation terms, besides the sp–d exchange interaction with the Mn magnetic moments.© 2001 American Institute of Physics.
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  • 7
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Magnetic impurities in semiconductor heterostructures interact indirectly via an electron gas generated by sources which may be far away from the region of interest, where the magnetic impurities are located. A system particularly important is the quantum well (QW) of GaAlAs/GaAs where the mismatch of the conduction band established a barrier of the order of 1 eV and the well width can be in a wide range starting from a few atomic layers. The electron gas in such structures behaves dynamically as quasibidimensional and its concentration can vary in a wide range. Indirect exchange via a Ruderman–Kittel–Kasuya–Yosida (RKKY) mechanism has been widely explored in the past. Here we have studied the RKKY interaction between two localized magnetic moments lying anywhere in a GaAs/AlAs symmetric double well when an electric field is applied parallel to the growth direction. The effect of the electric field is to break the symmetry along the growth direction at the same time that it changes the charge density inside each of the QWs. Therefore, by a change of the electric field intensity we change the interaction between impurities inside the same QW (intrawell exchange) and impurities locate in different QWs (interwell exchange). As a consequence we have obtained magnetic properties which are controlled by the intensity of the applied electric field. Our results include the effect of the barrier thickness and the concentration of the two-dimensional electron gas for QW widths in the range of 30–200 Å and electric fields in the range of 107 V/m.© 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Astrophysics and space science 90 (1983), S. 179-195 
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The equation of state for an ideal mixture of relativistic quantum gases obeying any (para-)statistics is given. Recursion formulae are obtained for the distribution function and correlations are analysed. The equation of state can be applied to the early Universe, allowing the quarks to be treated either as coloured fermions or (unequivalently) as parafermions of order 3. In the latter case, they exhibit a tendency of aggregate into triads by a mere statistical effect.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    International Journal of Quantum Chemistry 20 (1981), S. 933-949 
    ISSN: 0020-7608
    Keywords: Computational Chemistry and Molecular Modeling ; Atomic, Molecular and Optical Physics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The self-consistent APW-k · p method is utilized to obtain the band structure of NaCl in the “muffin-tin” approximation. Qe have investigated the convergence of many intermediate results, e.g., crystalline potential, matrix elements of the momentum operator, and energy eigenvalues at the Γ point. The summation in reciprocal space, included in the definition of the matrix D of the theory, is performed by direct sum and also by a special points technique. For the convergence criteria used, the results converged after five iterations.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    International Journal of Quantum Chemistry 30 (1986), S. 685-694 
    ISSN: 0020-7608
    Keywords: Computational Chemistry and Molecular Modeling ; Atomic, Molecular and Optical Physics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The Variational alternant molecular orbital method (VAMO) is described and applied to the case of three-dimensional and two-dimensional hydrogen molecules. The energies of the electron system are obtained, together with the equilibrium distances of the molecules. The intergrals equivelent to the Slater's integrals of the nonvariational method are described. Applications of this method to realizable systems are described.
    Additional Material: 6 Ill.
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