Now showing items 32-51 of 57

  • Indirect-Exchange Interactions in Disordered Metals at Finite Temperature 

    SHEGELSKI, MRA, and DJW GELDART. 1992. "Indirect-Exchange Interactions in Disordered Metals at Finite Temperature." Physical Review B 46(9): 5318-5327. Copyright © 1992 American Physical Society.
    No abstract available.
  • Influence of the envelope function on the ground-state energy of quasi-two-dimensional Wigner solids 

    Fujiki, N. M., and D. J. W. Geldart. 1992. "Influence of the envelope function on the ground-state energy of quasi-two-dimensional Wigner solids." Physical Review B (Condensed Matter) 46(15): 9634-40. Copyright © 1992 American Physical Society.
    At sufficiently low density, quasi-two-dimensional electron systems in their ground state form Wigner solids. In previous studies of the ground-state energy of such systems (in the absence of an applied magnetic field), ...
  • Lattice sums for dipolar systems 

    Fujiki, N. M., K. De'Bell, and D. J. W. Geldart. 1987. "Lattice sums for dipolar systems." Physical Review B (Condensed Matter) 36(16): 8512-16. Copyright © 1987 American Physical Society.
    A general method for the evaluation of lattice sums determining the effective parameters in the Hamiltonian of a dipolar magnetic system is described. The anisotropy of the Hamiltonian is examined for crystal structures ...
  • Linear-response function of a semi-infinite degenerate plasma in the presence of an external magnetic field 

    Glasser, M. L., D. J. W. Geldart, and G. Gumbs. 1984. "Linear-response function of a semi-infinite degenerate plasma in the presence of an external magnetic field." Physical Review B (Condensed Matter) 29(12): 6468-73. Copyright © 1984 American Physical Society.
    The static linear-response function x0(r,r') of a semi-infinite, degenerate plasma of noninteracting electrons is calculated in the presence of an external magnetic field perpendicular to the surface. The surface is simulated ...
  • Magnetic susceptibility of metallic transition-metal dichalcogenides 

    MacDonald, A. H., and D. J. W. Geldart. 1981. "Magnetic susceptibility of metallic transition-metal dichalcogenides." Physical Review B (Condensed Matter) 24(1): 469-72. Copyright © 1981 American Physical Society.
    A tight-binding model has been used to estimate the anisotropy of the magnetic susceptibility of the metallic transition-metal dichalcogenides. The calculated anisotropies obtained are in qualitative agreement with ...
  • Motion of a point dipole in an infinite hole through a superconductor 

    Yang, Z. J., R. A. Dunlap, and D. J. W. Geldart. 1993. "Motion of a point dipole in an infinite hole through a superconductor." Physical Review B (Condensed Matter) 48(6): 4172-5. Copyright © 1993 American Physical Society.
    The authors consider the system of a magnetic point dipole placed in an infinite square hole through a superconductor. Using the method of images they obtain the potential and the field distribution in the hollow. Using ...
  • Negative electron-electron drag between narrow quantum Hall channels 

    Tso, H. C. W., D. J. W. Geldart, and P. Vasilopoulos. 1998. "Negative electron-electron drag between narrow quantum Hall channels." Physical Review B (Condensed Matter) 57(11): 6561-5. Copyright © 1998 American Physical Society.
    Momentum transfer due to Coulomb interaction between two parallel, two-dimensional, narrow, and spatially separated layers, when a current Idrive is driven through one layer, is studied in the presence of a perpendicular ...
  • Nonlocal exchange energy of many-fermion systems of arbitrary dimensionality and interparticle interaction 

    Gumbs, G., and D. J. W. Geldart. 1986. "Nonlocal exchange energy of many-fermion systems of arbitrary dimensionality and interparticle interaction." Physical Review B (Condensed Matter) 34(10): 6847-52. Copyright © 1986 American Physical Society.
    The exchange contributions to the ground-state energy of an inhomogeneous many-fermion system of arbitrary dimensionality are calculated. Explicit results are given for both the local-density approximation and the lowest-order ...
  • Photoacoustic investigation of the temperature and magnetic-field dependence of the specific-heat capacity and thermal conductivity near the Curie point of gadolinium 

    Glorieux, C., J. Thoen, G. Bednarz, M. A. White, et al. 1995. "Photoacoustic investigation of the temperature and magnetic-field dependence of the specific-heat capacity and thermal conductivity near the Curie point of gadolinium." Physical Review B (Condensed Matter) 52(17): 12770-8. Copyright © 1995 American Physical Society.
    The photoacoustic technique was used as a simple but accurate tool to simultaneously determine the specific-heat capacity C and thermal conductivity K of gadolinium in the neighborhood of the Curie point. One polycrystalline ...
  • Plasmons in disordered, two-component, quasi-two-dimensional electron systems 

    Shegelski, M. R. A., and D. J. W. Geldart. 1989. "Plasmons in disordered, two-component, quasi-two-dimensional electron systems." Physical Review B (Condensed Matter) 40(6): 3647-51. Copyright © 1989 American Physical Society.
    The authors investigate the effect of elastic scattering of electrons on the properties of plasmons in a disordered, two-component, quasi-two-dimensional electron gas. Numerical results are given for dispersion relations ...
  • Quantum critical behavior in the insulating region of the two-dimensional metal-insulator transition 

    Geldart, D. J. W., and D. Neilson. 2007. "Quantum critical behavior in the insulating region of the two-dimensional metal-insulator transition." Physical Review B (Condensed Matter and Materials Physics) 76(19): 193304-1. Copyright © 2007 American Physical Society.
    We show that the quantum critical point associated with the metal-insulator transition phenomenon in two dimensions controls an extended critical region encompassing not only the usual quantum critical sector but also a ...
  • Quantum-Mechanical Interpretation of the Exchange-Correlation Potential of Kohn-Sham Density-Functional Theory - Comment 

    RASOLT, M., and DJW GELDART. 1990. "Quantum-Mechanical Interpretation of the Exchange-Correlation Potential of Kohn-Sham Density-Functional Theory - Comment." Physical Review Letters 65(2): 276-276. Copyright © 1990 American Physical Society.
    No abstract available.
  • Resistive anomalies at the critical point of isotropic ferromagnets 

    Richard, T. G., and D. J. W. Geldart. 1973. "Resistive anomalies at the critical point of isotropic ferromagnets." Physical Review Letters 30(7): 290-4. Copyright © 1973 American Physical Society.
    The effect of spin fluctuations on electrical resistivity (T) is studied in a single-band model. It is shown that d(T)/dT varies as the magnetic specific heat for TTc as well as TTc and that both short-range and long-range ...
  • Short-distance expansion for the spin-spin correlation function of uniaxial dipolar systems 

    Fujiki, N. M., K. De'Bell, and D. J. W. Geldart. 1992. "Short-distance expansion for the spin-spin correlation function of uniaxial dipolar systems." Physical Review B (Condensed Matter) 45(9): 4686-94. Copyright © 1992 American Physical Society.
    Motivated by recent work on the critical resistivity of gadolinium, a detailed study has been made of the temperature dependence of the two-point vertex function in the large-momentum regime. The operator-project expansion ...
  • Small and large wavelength contributions to the exchange and correlation energy of a nonuniform electron gas 

    Rasolt, M., and D. J. W. Geldart. 1982. "Small and large wavelength contributions to the exchange and correlation energy of a nonuniform electron gas." Physical Review B (Condensed Matter) 25(8): 5133-46. Copyright © 1982 American Physical Society.
    For the uniform electron gas, the decomposition of the exchange and correlation energy into its individual wave vectors has proved invaluable for both a deeper understanding of its structure as well as its extensions to ...
  • Spin correlations in the low-density electron system 

    Green, F., D. Neilson, L. Swierkowski, J. Szymanski, et al. 1993. "Spin correlations in the low-density electron system." Physical Review B (Condensed Matter) 47(8): 4187-92. Copyright © 1993 American Physical Society.
    The authors have calculated the spin susceptibility x(q,) within a microscopic model over the full range of densities of the electron liquid in the paramagnetic state. Electron-electron interactions are described by static ...
  • Surface-induced quantum density oscillations in the presence of an external magnetic field 

    Geldart, D. J. W., G. Gumbs, and M. L. Glasser. 1985. "Surface-induced quantum density oscillations in the presence of an external magnetic field." Physical Review B (Condensed Matter) 31(6): 3315-22. Copyright © 1985 American Physical Society.
    The electron number density and spin density near the surface of a model metal, semimetal, or semiconductor are calculated in the presence of a uniform magnetic field. The magnetic field is applied in a direction perpendicular ...
  • Temperature dependent resistivity in the low-resistance region for diffusive transport in two dimensions 

    Geldart, D. J. W., and D. Neilson. 2004. "Temperature dependent resistivity in the low-resistance region for diffusive transport in two dimensions." Physical Review B (Condensed Matter and Materials Physics) 70(23): 235336-1. Copyright © 2004 American Physical Society.
    The interpretation of the metal-insulator transition phenomena in disordered two-dimensional electron systems in terms of density-dependent scaling variables suggests the existence of a quantum critical point at some ...
  • Theory of impurity-concentration dependence of freezing temperatures of metallic spin glasses 

    Shegelski, M. R. A., and D. J. W. Geldart. 1992. "Theory of impurity-concentration dependence of freezing temperatures of metallic spin glasses." Physical Review B (Condensed Matter) 46(5): 2853-63. Copyright © 1992 American Physical Society.
    The authors present a theory of the freezing temperature Tg of metallic spin glasses. Length scales associated with intrinsic sd scattering and finite temperature play essential roles. They describe an approach in which ...
  • Theory of Spin-Fluctuation Resistivity Near Critical-Point of Binary-Alloys and Antiferromagnets 

    RICHARD, TG, and DJW GELDART. 1977. "Theory of Spin-Fluctuation Resistivity Near Critical-Point of Binary-Alloys and Antiferromagnets." Physical Review B 15(3): 1502-1513. Copyright © 1977 American Physical Society.
    No abstract available.