Volume 83, Number 3, August 2008
|Number of page(s)||5|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||22 July 2008|
Conductance plateau in quantum spin transport through an interacting quantum dot
Department of Physics, and Center of Theoretical and Computational Physics, The University of Hong Kong Hong Kong, China
2 Department of Physics, Renmin University of China - Beijing 100872, China
3 Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences Beijing 100080, China
Corresponding author: email@example.com
Accepted: 19 June 2008
Quantum spin transport is studied in an interacting quantum dot. It is found that a conductance ”plateau” emerges in the non-linear charge conductance by a spin bias in the Kondo regime. The conductance plateau, as a complementary to the Kondo peak, originates from the strong electron correlation and exchange processes in the quantum dot, and can be regarded as one of the characteristics in quantum spin transport.
PACS: 72.25.-b – Spin polarized transport / 73.21.La – Quantum dots / 72.15.Qm – Scattering mechanisms and Kondo effect
© EPLA, 2008
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