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Abstract: A generalized Anderson model for a magnetic ion in a harmonic potential isformulated. The model is investigated by the numerical renormalizationgroupNRG method. In addition to the conventional s-wave screening, the modelexhibits phonon assisted p-wave Kondo effect as well as Yu and Anderson typeKondo effect. It is shown that the s-wave Kondo and the Yu-Anderson Kondobelong to the same fixed point. At the boundary between the s-wave and p-waveKondo regions line of fixed points of the two channel Kondo effect isidentified.



Autor: Satoshi Yashiki, Shunsuke Kirino, Kazuo Ueda

Fuente: https://arxiv.org/







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