Effects of disorder on conductance through small interacting systems

Details Effects of disorder on conductance through small interacting systems Effects of disorder on conductance through small interacting systems

2002-09-20

arxiv.org/abs/cond-mat/0209485v1

Physica E 18 (2003) 300

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

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

Scientific paper

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.

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