Non-equilibrium Kondo effect in a single-channel quantum dot asymmetrically coupled to two reservoirs
|Renata G. Swirkowicz 1, Józef Barnaś 2,3, Michal Wilczynski 1|
1. Warsaw University of Technology, Faculty of Physics, Koszykowa 75, Warszawa 00-662, Poland
Non-equilibrium Kondo effect in a quantum dot coupled to two metallic leads is studied theoretically. The leads can be either ferromagnetic or nonmagnetic. However, of particular interest is the case when the leads are made of a system with large spin asymmetry of transport properties, like giant and/or colossal magnetoresistance materials. Owing to the spin asymmetry, the effective coupling between the dot and reservoirs can be strongly spin dependent, too. Electron interaction on the dot is taken into account via the Hubbard term for a single-channel model with an arbitrary value of the correlation parameter U.
Presentation: poster at E-MRS Fall Meeting 2003, Symposium D, by Renata G. Świrkowicz
See On-line Journal of E-MRS Fall Meeting 2003
Submitted: 2003-05-27 12:45 Revised: 2009-06-08 12:55