Analytical results for the CoqblinSchrieffer model with generalized magnetic fields
Abstract
Using the approach alternative to the traditional thermodynamic Bethe ansatz, we derive analytical expressions for the free energy of CoqblinSchrieffer model with arbitrary magnetic and crystal fields. In the Appendix we calculate the zerotemperature magnetic susceptibility for two concrete crystalfield 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.
 Publication:

Physical Review B
 Pub Date:
 September 2003
 DOI:
 10.1103/PhysRevB.68.094427
 arXiv:
 arXiv:condmat/0305237
 Bibcode:
 2003PhRvB..68i4427B
 Keywords:

 71.10.Pm;
 72.80.Sk;
 Fermions in reduced dimensions;
 Insulators;
 Condensed Matter  Strongly Correlated Electrons;
 High Energy Physics  Theory;
 Mathematical Physics
 EPrint:
 5 pages