Open AccessA SLAVE-BOSON MEAN FIELD THEORY FOR THE HEAVY-FERMION ALLOYS
Author(s) -
Zheng-zhong Li,
Qingchun Zhou,
Qiu Yang
Publication year - 1989
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.38.2019
Subject(s) - physics , slave boson , heavy fermion , fermion , condensed matter physics , mean field theory , electron , boson , seebeck coefficient , field (mathematics) , thermoelectric effect , quantum electrodynamics , quantum mechanics , superconductivity , hubbard model , mathematics , pure mathematics
In this article, a theory describing the normal state of the heavy-fermion alloys has been proposed based on the Yoshimorikasai model in the framework of slave-boson mean field theory by using the CPA method. The density of states (DOS) and its concentration dependences for the conduction electrons and strong correlated f-electrons in the heavy-fermion alloys are calculated self-consistently. The results we obtained not only reveal the process of the pseudo-gap formation in the DOS, but also give a reasonable explanation of the low temperature coherence effects in specific heat and thermoelectric power for the heavy-fermion alloys.