Volume 72, Number 2, October 2005
|Page(s)||263 - 269|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||07 September 2005|
Landauer transport with inelastic scattering
Department of Condensed-Matter Physics, the Weizmann Institute of Science Rehovot 76100, Israel
2 School of Physics and Astronomy, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University - Tel Aviv 69978, Israel
3 Physics Department, Ben Gurion University - Beer Sheva 84105, Israel
4 The Albert Einstein Minerva Center for Theoretical Physics at the Weizmann Institute of Science - Rehovot 76100, Israel
Accepted: 5 August 2005
The Landauer transport formulation is generalized to the case of a dynamic scatterer with arbitrary energy levels, weakly coupled to a long ideal noninteracting wire. The two-terminal linear conductance of the device is expressed in terms of the (inelastic) scattering cross-sections of the electrons off the scatterer, using a Fermi-liquid picture for the scattering states of the whole system. Assuming unitarity, i.e. the optical theorem, we obtain the same results from a Kubo linear-response treatment and from a Keldysh technique approach.
PACS: 72.10.-d – Theory of electronic transport; scattering mechanisms / 73.23.-b – Electronic transport in mesoscopic systems / 05.60.Gg – Quantum transport
© EDP Sciences, 2005
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