Energy-Level DensityBosonsBoundary ConditionsUsing Poisson's formula for summation, we obtain an expression for the density of states of the d-dimensional scalar Helmholtz equation under various boundary conditions. Likewise, we also obtain formulas of Walfisz type. It becomes evident that the ...
Electronic and Local Structural Properties of the Bi2Sr2(Ca1-xYx)Cu2O8+δ Family of Materials, Studied by X-ray Absorption Spectroscopy The hole distribution of overdoped, optimum-doped and underdoped states in the series Bi2Sr2(Ca1-xYx)Cu2O8+δ compounds has been investigated by high-resolut...
At high energies, above a few MeV, the nuclear density of states is well described by a formula that depends on the smooth single particle density of states at the Fermi surface, the nuclear shell correction and the pairing energy. In this paper we present an analysis of the low energy ...
This paper presents a convenient calculation formula of energy density for nuclear fuel or nuclear battery that outputs energy by whatever decay. Also a relative formula is deduced for easy comparison between different fuels. At last, with the convenient formula, the energy density comparison and pos...
The (1/VMD)Σα˜ summation of interesting parameters over the quantum numbers α˜={kq,nsv,nsc} can be done directly in the wavevector space. Sometimes, it is more convenient to obtain the density of states first and then to make the integral in the energy space. Under the decoupled...
Free energy formula for a strong coupling superconductor with energy dependent electronic density of statesGeneralized expressions for the free energy difference between normal and superconducting states are derived for the case of an energy dependent (ED) electronic density of states (EDOS) with normal...
A series of polynitroprismanes, C6H6n (NO2) n (n=1–6) intended for use as high energy density compounds (HEDCs) were designed computationally. Their electronic structures, heats of formation, interactions between nitro groups, specific enthalpies of combustion, bond dissociation energies, and ...
We show that the Werthamer-Helfand-Hohenberg formula considering the Pauli limiting and the spin-orbit scattering together can effectively describe both Hc2ab(T) and Hc2c(T) curves. The enhancement in quasi-particle density of states ... S Khim,JW Kim,ES Choi,... - 《Physics》 被引量:...
The spectral energy density can be looked upon as the electromagnetic energy per unit volume per unit angular frequency. It is the product of the local density of states (LDOS), D(z,ω), and the mean energy of the Planck oscillator, ie, (1.63)〈u(z,ω)〉=D(z,ω)Θ(ω,T) The ...
We consider kinetic energy functionals that depend, beside the usual semilocal quantities (density, gradient, Laplacian of the density), on a generalized Yukawa potential, that is the screened Coulomb potential of the density raised to some power. These functionals, named Yukawa generalized gradient ...