Coulomb blockade in a quantum wire with long-range Coulomb interactions

Дата и время публикации : 1996-02-08T16:22:55Z

Авторы публикации и институты :
Hélène Maurey
Thierry Giamarchi

Ссылка на журнал-издание: Europhys. Lett. 38 681 (1997)
Коментарии к cтатье: 11 pages,1 figure, uses epsfig
Первичная категория: cond-mat

Все категории : cond-mat

Краткий обзор статьи: We study the transport through two impurities or “barriers” in a one-dimensional quantum wire, taking into account the long-range $frac1r$ Coulomb interactions. We compute the temperature-dependent conductance $G(T)$ of this system. Long-range forces lead to a dramatic increase of weak barrier potentials with decreasing temperature, even in the “resonant” case. The system thus always reaches a “strong barrier” regime in which only charge is pinned, contrary to the standard LL case. $G(T)$ vanishes faster than any power as $T$ goes to zero. In particular, resonant tunneling is suppressed at zero temperature.

Category: Physics