Numerical Renormalization-Group Study of Particle-Hole Symmetry Breaking in Two-Channel Kondo Problem : Effect of Repulsion between Conduction Electrons and Potential Scattering

Дата и время публикации : 1995-06-21T09:13:02Z

Авторы публикации и институты :
H. Kusunose (Osaka University, Tohoku University, Japan)
K. Miyake (Osaka University, Tohoku University, Japan)
Y. Shimizu (Osaka University, Tohoku University, Japan)
O. Sakai (Osaka University, Tohoku University, Japan)

Ссылка на журнал-издание: Ссылка на журнал-издание не найдена
Коментарии к cтатье: 4 pages (ReVTeX Ver. 3.0), 6 figures (available on request)
Первичная категория: cond-mat

Все категории : cond-mat

Краткий обзор статьи: Particle-hole symmetry breaking perturbation in two-channel pseudospin Kondo problem is studied by the numerical renormalization-group method. It is shown that the repulsion between conduction electrons at the impurity site and the single particle potential are the relevant perturbations against the conventional non-Fermi liquid fixed point. Although the repulsion (potential) with realistic strength prevents the overscreening of pseudospin, it induces in turn a {it real spin}, which is also overscreened again. Thus the {it real spin} susceptibility becomes anomalous contrary to the conventional two-channel Kondo problem.

Category: Physics