Conductance in strongly correlated 1D systems: Real-Time Dynamics in DMRG

Details Conductance in strongly correlated 1D systems: Real-Time Dynamics in DMRG Conductance in strongly correlated 1D systems: Real-Time Dynamics in DMRG

2006-01-17

arxiv.org/abs/cond-mat/0601389v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 7 figures

Scientific paper

A new method to perform linear and finite bias conductance calculations in one dimensional systems based on the calculation of real time evolution within the Density Matrix Renormalization Group (DMRG) is presented. We consider a system of spinless fermions consisting of an extended interacting nanostructure attached to non-interacting leads. Results for the linear and finite bias conductance through a seven site structure with weak and strong nearest-neighbor interactions are presented. Comparison with exact diagonalization results in the non-interacting limit serve as verification of the accuracy of our approach. Our results show that interaction effects lead to an energy dependent self energy in the differential conductance.

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