Nonlinear I-V Characteristics of a Mesoscopic Conductor

Baigeng Wang; Jian Wang; Hong Guo

doi:10.1063/1.371485

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arXiv · cond-mat/9902307

Nonlinear I-V Characteristics of a Mesoscopic Conductor

Baigeng Wang·Jian Wang·Hong Guo

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Abstract

We present a general theoretical formulation, based on nonequilibrium Green's functions, for nonlinear DC transport in multi-probe mesoscopic conductors. The theory is gauge invariant and is useful for the predictions of current-voltage characteristics and the nonequilibrium charge pile-ups inside the conductor. We have provided a detailed comparison between the gauge invariant scattering matrix theory and our theory. We have also given several examples where the I-V curve can be obtained analytically. The effects of exchange and correlation have been considered explicitly.

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Baigeng Wang, Jian Wang, Hong Guo. 1999-02-23. Nonlinear I-V Characteristics of a Mesoscopic Conductor. https://doi.org/10.1063/1.371485

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