Nonlinear resonant tunneling through an Anderson impurity at low temperature
- 7 June 1993
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 70 (23) , 3635-3638
- https://doi.org/10.1103/physrevlett.70.3635
Abstract
The problem of nonlinear resonant tunneling through an Anderson impurity is investigated in this Letter using a combined approach of Keldysh formalism and 1/N expansion at zero temperature. We find that to order 1/N, the Kondo resonance is not destroyed by any finite potential difference between external probes. The resulting one-electron Green’s functions and differential conductance are presented. The effect of finite temperature is discussed.Keywords
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