Crystalline field effect on the kondo impurity

Kong Ju Bock Lee

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


We consider a Kondo impurity interacting with conduction electrons in two different orbital channels in a crystalline field Δ. The ground state of the impurity is in an orbital singlet, i.e., l z imp = 0, and the valence of the impurity is n imp = 2 at half filling without a crystalline field. On the other hand, for an extremely large crystalline field, l z imp - 1/2 and n imp = 1. We study the crystalline field effect on the impurity. Neglecting an external magnetic field and a charge fluctuation, we calculate the valence of the impurity analytically via the Bethe-ansatz equations for both weak (Δ < < T K) and strong (Δ > > T K) crystalline fields, where T K is the Kondo temperature. The crystalline field provides the characteristic Kondo logarithms.

Original languageEnglish
Pages (from-to)310-314
Number of pages5
JournalJournal of the Korean Physical Society
Issue number2
StatePublished - 1997


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