Eur. Phys. J. B (2012) 85: 249
https://doi.org/10.1140/epjb/e2012-20948-x

Regular Article

Coulomb correlations effects on localized charge relaxation in the coupled quantum dots

¹ P.N. Lebedev Physical Institute of RAS, 119991 Moscow, Russia
² Moscow State University, Department of Physics, 119991 Moscow, Russia

^a e-mail: vmantsev@spmlab.phys.msu.ru

Received: 23 November 2011
Received in final form: 16 May 2012
Published online: 23 July 2012

Abstract

We analyzed localized charge time evolution in the system of two interacting quantum dots (QD) (artificial molecule) coupled with the continuous spectrum states. We demonstrated that Coulomb interaction modifies relaxation rates and is responsible for non-monotonic time evolution of the localized charge. We suggested new mechanism of this non-monotonic charge time evolution connected with charge redistribution between different relaxation channels in each QD.