Browsing Geldart, Wally by Submit Date
Now showing items 1-20 of 57
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Exchange and Correlation Energy of an Inhomogeneous Electron-Gas at Metallic Densities
No abstract available. -
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Critical behavior of two-dimensional magnetic systems with dipole-dipole interactions
The critical exponents of two-dimensional dipolar magnetic systems with isotropic in-plane ordering may be obtained from the expansion which determines the exponents of isotropic three-dimensional dipolar systems. However, ... -
Coefficients to O(3) for the mixed fixed point of the nm-component field model
The nm-component field model has a number of application in the description of critical phenomena. The coefficients in the expansion for the stability matrix eigenvalues and correlation function exponent n for the mixed ... -
Spin correlations in the low-density electron system
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 ... -
Photoacoustic investigation of the temperature and magnetic-field dependence of the specific-heat capacity and thermal conductivity near the Curie point of gadolinium
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 ... -
Linear-response function of a semi-infinite degenerate plasma in the presence of an external magnetic field
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 ... -
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Depth-dependent static shielding of an impurity by a quantum plasma in a magnetic field
The static shielding of a charged impurity embedded in a quantum plasma is studied with the use of linear-response theory. The required response function is calculated in the random-phase approximation with a uniform ... -
Nonlocal exchange energy of many-fermion systems of arbitrary dimensionality and interparticle interaction
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 ... -
Critical magnetic susceptibility of gadolinium
The magnetic suspectibility of a single crystal of high-purity gadolinium has been measured in the critical region with use of AC susceptibility methods. For reduced temperatures t10-3, the data are described by a simple ... -
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Universal correction to scaling amplitude ratios for inhomogeneous ferromagnets with continuous symmetry
Critical exponents and amplitude ratios for corrections to the scaling limit are calculated for a randomly diluted, weakly inhomogeneous O(m) Heisenberg model in an expansion in =4-d. Calculations for the exponents and ... -
Umklapp electron-electron scattering and the low-temperature electrical resistivity of the alkali metals
The Umklapp fraction, , for electron-electron scattering in the alkali metals has been calculated using first-principles pseudopotentials. Both Coulomb scattering and phonon-exchange scattering have been included. For a ... -
Comment on `Anisotropic superconductors with repulsive average interaction'
For original paper see M.D. Whitmore and J.P. Carbotte, ibid., vol.23, p.5782 (1981). In a recent paper Whitmore and Carbotte concluded that a sufficient condition for the superconducting state to be stable relative to the ... -
Magnetic susceptibility of metallic transition-metal dichalcogenides
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 ... -
Coefficients to O (Epsilon-3) for the Mixed Fixed-Point of the Nm-Component Field Model
No abstract available. -
Critical exponents and amplitude ratios from electrical resistivity measurements of dysprosium
Resistive anomalies in helical antiferromagnets are shown to reflect the temperature dependence of the specific heat sufficiently close to the Neel temperature. The temperature dependence of superzone energy gaps does not ... -
Adsorbate densities and surface potentials of physisorbed systems: A density-functional approach
A density-functional approach for the calculation of the density of particles adsorbed on the surface of a solid is explored including the adparticle two-body interaction. The coverages and effective surface potentials so ...
