Open AccessELECTRICAL CONDUCTIVITY OF LIQUID METALS AND AMORPHOUS SOLIDS-COHERENT-POTENTIAL APPROXIMATION
Author(s) -
Zhao-Qing Zhang
Publication year - 1982
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.31.294
Subject(s) - coherent potential approximation , amorphous solid , electrical resistivity and conductivity , lattice (music) , conductivity , materials science , physics , condensed matter physics , thermodynamics , quantum mechanics , electronic structure , chemistry , organic chemistry , acoustics
A tight-binding model is used to obtain the electrical conductivity for liquid metals and amorphous solids within the framework of coherent-potential approximation. Following the method developed in our previous paper, the approximated equations for averaged two-particle Green's function of a lattice-gas model are obtained with short-range order for atoms included. The corresponding equations for liquid metals and amorphous solids are reduced by taking the limit of the lattice-gas model. Since the self-consistent equations so obtained contain all single-site diagrams, they have all the properties of the coherent-potential approximation.