Weak and Strong Localization in Low-Dimensional Semiconductor Structures

Дата и время публикации : 1996-01-24T16:35:25Z

Авторы публикации и институты :
S. -R. Eric Yang
J. Rammer

Ссылка на журнал-издание: Ссылка на журнал-издание не найдена
Коментарии к cтатье: 10 pages, no figures. To appear in Physical Review B
Первичная категория: cond-mat

Все категории : cond-mat

Краткий обзор статьи: The dependence of the localization length on the number of occupied subbands $N$ in low-dimensional semiconductors is investigated. The localization length is shown to be proportional to the number of occupied subbands in quasi-one-dimensional quantum wires while it grows exponentially with $N$ in quasi-two-dimensional systems. Also a weak localization theory is developed for large N with a well-defined small expansion parameter $1/N$. The temperature dependence of the conductivity deduced using this perturbation theory agrees with the experimentally observed dependence.

Category: Physics