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Singularities in the paramagnetic susceptibility of random Hubbard alloys
Author(s) -
Kolley E.,
Kolley W.
Publication year - 1978
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220860147
Subject(s) - paramagnetism , condensed matter physics , physics , zero temperature , coherent potential approximation , spin (aerodynamics) , particle (ecology) , hubbard model , fermi gamma ray space telescope , electron , zero (linguistics) , gravitational singularity , magnetic susceptibility , component (thermodynamics) , quantum mechanics , electronic structure , thermodynamics , superconductivity , geology , linguistics , oceanography , philosophy
Abstract The paramagnetic susceptibility of disordered alloys is derived from a microscopic Fermi liquid approach for tightly bound electrons at zero temperature. Particle–particle and particle–hole effective vertices are calculated within the coherent local ladder approximation. The correlationenhanced expressions for component and alloy susceptibilities refer to paramagnetic instabilities. Numerical results are presented for partial and total CPA averages of static susceptibilities, magnetizations, and spin‐dependent densities of states.