Repulsion between Conduction Electrons as a Relevant Perturbation against the Stability of Non-Fermi-Liquid Fixed Point of Multichannel Kondo Problem

Kazumasa Miyake, Hiroaki Kusunose, Osamu Narikiyo

研究成果: Contribution to journalArticle査読

7 被引用数 (Scopus)

抄録

It is shown that a non-Fermi-liquid fixed point of the multichannel Kondo problem is unstable for repulsive interaction at the impurity site between conduction electrons with different flavors and the same pseudospin. The anomalous fixed point is shown, by the perturbative renormalization group argument, to move into the strong coupling region with increasing repulsion. The low-temperature properties at the so-called “Toulouse limit, are calculated by the bosonization method to show that the Fermi-liquid like behavior is recovered quickly as soon as repulsion is switched on. This result poses a question as to the reality of the non-Fermi-liquid state for the multichannel Kondo model which has been examined extensively so far.

本文言語英語
ページ(範囲)2553-2556
ページ数4
ジャーナルjournal of the physical society of japan
62
8
DOI
出版ステータス出版済み - 1 1 1993
外部発表はい

All Science Journal Classification (ASJC) codes

  • 物理学および天文学(全般)

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