Edge Singularity for the Optically Induced Kondo Effect in a Quantum Dot

Дата и время публикации : 2000-09-21T08:24:28Z

Авторы публикации и институты :
T. Fujii
A. Furusaki
N. Kawakami
M. Sigrist

Ссылка на журнал-издание: Ссылка на журнал-издание не найдена
Коментарии к cтатье: 5 pages, REVTeX, 2 figures
Первичная категория: cond-mat

Все категории : cond-mat

Краткий обзор статьи: We analyze the optically induced Kondo effect in the absorption spectrum for a quantum dot with an even number of electrons, for which the Kondo effect does not occur in the ground state. The Kondo exchange couplings generated for photo-excited states can be either antiferromagnetic or ferromagnetic, which may result in different types of the edge singularities, depending on the microscopic parameters of the dot. We discuss critical properties in the spectrum by using low-energy effective field theory.

Category: Physics