Effects of disorder on conductance through small interacting systems

Abstract

We study the effects of disorders on the transport through small interacting systems based on a two-dimensional Hubbard cluster of finite size connected to two noninteracting leads. This system can be regarded as a model for the superlattice of quantum dots or atomic network of the nanometer size. We calculate the conductance at T=0 using the order $U^2$ self-energy in an electron-hole symmetric case. The results show that the conductance is ensitive to the randomness when the resonance states are situated near the Fermi energy.

2 pages, 3 figures, to be published in Physica E, proceedings Low Temperature Physics 23 (Hirosima, Japan)

References in corpus (1)

• Perturbation Study of the Conductance through an Interacting Region Connected to Multi-Mode Leads

Cited by in corpus (1)

• Effects of Electron Correlation on the Transport through a Quantum Dot Superlattice