Nonlinear Transport Properties of Quantum Dots

Дата и время публикации : 1993-06-23T13:28:00Z

Авторы публикации и институты :
W. Pfaff (Institut for theoretical physics, Univ. Stuttgart)
D. Weinmann (Institut for theoretical physics, Univ. Stuttgart)
W. Haeusler (Institut for theoretical physics, Univ. Stuttgart)
B. Kramer (Institut for theoretical physics, Univ. Stuttgart)
U. Weiss (Institut for theoretical physics, Univ. Stuttgart)
PTB Braunschweig (Institut for theoretical physics, Univ. Stuttgart)

Ссылка на журнал-издание: Ссылка на журнал-издание не найдена
Коментарии к cтатье: 11 pages (excl. Figures), 3 Figures are available on request, RevTeX
Первичная категория: cond-mat

Все категории : cond-mat

Краткий обзор статьи: The influence of excited levels on nonlinear transport properties of a quantum dot weakly coupled to leads is studied using a master–equation approach. A charging model for the dot is compared with a quantum mechanical model for interacting electrons. The current–voltage curve shows Coulomb blockade and additional finestructure that is related to the excited states of the correlated electrons. Unequal coupling to the leads causes asymmetric conductance peaks. Negative differential conductances are predicted due to the existence of excited states with different spins.

Category: Physics