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

Physics – Condensed Matter – Strongly Correlated Electrons

Scientific paper

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5 pages

Scientific paper

10.1103/PhysRevB.68.094427

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 Appendix we discuss two
concrete examples including the field generated crossover from the SU(4) to the
SU(2) symmetry in the SU(4)-symmetric model.

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