Charging Effects in Ultrasmall Quantum Dots in the Presence of Time-Varying Fields

Дата и время публикации : 1993-06-15T10:26:56Z

Авторы публикации и институты :
C. Bruder
H. Schoeller

Ссылка на журнал-издание: Ссылка на журнал-издание не найдена
Коментарии к cтатье: 9 Pages Revtex. 3 postscript figures available on request from bruder@tfp.physik.uni-karlsruhe.de
Первичная категория: cond-mat

Все категории : cond-mat

Краткий обзор статьи: The influence of charging effects on time-dependent transport in small semiconductor quantum dots with arbitrary level spectra is studied. Starting from an explicit time-dependent tunneling Hamiltonian, a non-Markovian Master equation is derived which is also valid in the nonlinear response regime. The many-body nonequilibrium distribution functions of the dot are calculated and the I-V characteristic of the structure including the displacement currents is obtained. New resonant features show up in the Coulomb oscillations and in the Coulomb staircase, and a new possibility to realize electronic pumps is described.

Category: Physics