Overscreened single-channel Kondo problem

Article

关键词: CONFORMAL-FIELD-THEORY;    2-LEVEL SYSTEM;    AMORPHOUS METALS;    CURRENT-ALGEBRA;    FUSION RULES;    MODEL;    ELECTRONS;    LIMIT;   

DOI  :  10.1103/PhysRevB.54.14918

来源: SCIE

【 摘 要 】

We consider the single-channel Kondo problem with the Kondo coupling between a spin S impurity and conduction electrons with spin j. These problems arise as multicritical points in the parameter spaces of two- and higher-level tunneling systems and some impurity models of heavy fermion compounds. In contrast to the previous Bethe-ansatz conjectures, it turns out that the dynamics of the spin sector is the same as that of a spin-S impurity coupled to k(j) channels of spin-1/2 electrons with k(j)=2j(j+1)(2j+1)/3. As a result, for 2S

【 授权许可】

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