Browsing Geldart, Wally by Subject "Electron gas"

Now showing items 1-9 of 9

  • Comment on `Exact electron-gas response functions at high density' 

    Rasolt, M., D. J. W. Geldart, D. C. Langreth, and S. H. Vosko. 1988. "Comment on `Exact electron-gas response functions at high density'." Physical Review Letters 60(19): 1983-4. Copyright © 1988 American Physical Society.
    For original paper see D.C. Langreth and S.H. Vosko, ibid., vol.59, p.497 (1987). Langreth and Vosko calculated correlation contributions to the Hohenberg-Kohn energy response function Kxc(q,k). They claimed that the results ...

  • Convergence properties as a function of spatial dimensionality of gradient expansions for the ground-state energy of an inhomogeneous electron gas 

    Geldart, D. J. W., and G. Gumbs. 1986. "Convergence properties as a function of spatial dimensionality of gradient expansions for the ground-state energy of an inhomogeneous electron gas." Physical Review B (Condensed Matter) 33(4): 2820-3. Copyright © 1986 American Physical Society.
    The extended Thomas-Fermi approximation for the ground-state energy of a many-fermion system is generalized to arbitrary spatial dimension. The authors' objective is a better understanding of convergence properties of such ...

  • Diamagnetic susceptibility of a dense electron gas 

    Vignale, G., M. Rosolt, and D. J. W. Geldart. 1988. "Diamagnetic susceptibility of a dense electron gas." Physical Review B (Condensed Matter) 37(5): 2502-7. Copyright © 1988 American Physical Society.
    The authors calculate the diamagnetic susceptibility of a uniform interacting electron gas in the random-phase approximation. From this the exact high-density expansion of the diamagnetic susceptibility is obtained

  • Gradient corrections in the exchange and correlation energy of an inhomogeneous electron gas 

    Rasolt, M., and D. J. W. Geldart. 1975. "Gradient corrections in the exchange and correlation energy of an inhomogeneous electron gas." Physical Review Letters 35(18): 1234-7. Copyright © 1975 American Physical Society.
    A closed form expression for the coefficient Bxc which determines the first gradient corrections to the exchange and correction energy is derived. The exact expression is obtained from an approximation that includes the ...

  • 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 ...

  • 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 ...

  • 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 ...