Non-equilibrium 2-Channel Kondo model for quantum dots

Дата и время публикации : 1998-12-31T04:02:07Z

Авторы публикации и институты :
Xiao-Gang Wen

Ссылка на журнал-издание: Ссылка на журнал-издание не найдена
Коментарии к cтатье: 4 pages, 1 fig, a new reference is added
Первичная категория: cond-mat.mes-hall

Все категории : cond-mat.mes-hall, cond-mat.str-el

Краткий обзор статьи: We find that, under certain condition, a quantum dot with odd number of electron and coupled to two leads can be described by a non-equilibrium 2-channel Kondo model, when the two leads has a large voltage bias between them. The model is exactly soluble and can be mapped into a free fermion system, even in the presence of external magnetic field and other relevant perturbations. All (dynamical) correlation functions can be calculated. The fixed point of the 2-channel Kondo model is a non-equilibrium fixed point and is different from the usual 1-channel and 2-channel Kondo fixed point.

Category: Physics