Analytical results for the Coqblin-Schrieffer model with generalized magnetic fields

Article

关键词: THERMODYNAMIC BETHE-ANSATZ;    GROUND-STATE PROPERTIES;    INTEGRABLE STRUCTURE;    CRYSTAL FIELDS;    KONDO PROBLEM;    ALLOYS;    IMPURITIES;    EQUATIONS;    SYSTEMS;   

DOI  :  10.1103/PhysRevB.68.094427

来源: SCIE

【 摘 要 】

Using the approach alternative to the traditional thermodynamic Bethe ansatz, we derive analytical expressions for the free energy of Coqblin-Schrieffer model with arbitrary magnetic and crystal fields. In the Appendix we calculate the zero-temperature magnetic susceptibility for two concrete crystal-field patterns. One of the patterns describes the field generated crossover from the SU(4) to the SU(2) symmetry in the SU(4)-symmetric model.

【 授权许可】

Free