Twofold advance in the theoretical understanding of far-from-equilibrium properties of interacting nanostructures

Details Twofold advance in the theoretical understanding of far-from-equilibrium properties of interacting nanostructures Twofold advance in the theoretical understanding of far-from-equilibrium properties of interacting nanostructures

2008-06-23

arxiv.org/abs/0806.3731v3

Phys. Rev. Lett. 101, 140601 (2008)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 3 figures ; published version

Scientific paper

10.1103/PhysRevLett.101.140601

We calculate the full $I-V$ characteristics at vanishing temperature in the self-dual interacting resonant level model in two ways. The first uses careful time dependent DMRG with large number of states per block and a representation of the reservoirs as leads subjected to a chemical potential. The other is based on integrability in the continuum limit, and generalizes early work of Fendley Ludwig Saleur on the boundary sine-Gordon model. The two approaches are in excellent agreement, and uncover among other things a power law decay of the current at large voltages when $U>0$.

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