Multichannel Kondo Screening in a One-Dimensional Correlated Electron System

Дата и время публикации : 1997-05-06T18:11:40Z

Авторы публикации и институты :
A. A. Zvyagin
H. Johannesson
M. Granath

Ссылка на журнал-издание: Europhys. Lett. 41, 213 (1998)
Коментарии к cтатье: 5 pages Revtex. Final revised version to appear in Europhys. Lett
Первичная категория: cond-mat.str-el

Все категории : cond-mat.str-el

Краткий обзор статьи: We present the exact Bethe Ansatz solution of a multichannel model of one- dimensional correlated electrons coupled antiferromagnetically to a magnetic impurity of arbitrary spin S. The solution reveals that interactions in the bulk make the magnetic impurity drive both spin and charge fluctuations, producing a mixed valence at the impurity site, with an associated effective spin S_eff > S in the presence of a magnetic field. The screening of the impurity spin is controlled by its size independently of the number of channels, in contrast to the multichannel Kondo effect for free electrons.

Category: Physics