Multiterminal Conductance and Decoherence Effect of a Three-Terminal Kondo Dot
FANG Tie-Feng1 , WANG Shun-Jin1,2
1 Department of Modern Physics, Lanzhou University, Lanzhou 730000
2 Department of Physics, Sichuan University, Chengdu 610064
Multiterminal Conductance and Decoherence Effect of a Three-Terminal Kondo Dot
FANG Tie-Feng1 ;WANG Shun-Jin1,2
1 Department of Modern Physics, Lanzhou University, Lanzhou 730000
2 Department of Physics, Sichuan University, Chengdu 610064
关键词 ：
73.23.-b ,
73.63.Kv ,
72.15.Qm ,
75.20.Hr
Abstract ： A three-terminal Kondo dot modelled by the Anderson Hamiltonian is investigated. In the strong correlation limit, we calculate the multiterminal conductance and the voltage-induced characteristic splitting of the nonequilibrium Kondo resonance by using the equation of motion approach from viewpoint of the correlation dynamics. A qualitative and reasonable agreement with a recently reported experiment is obtained. We also simulate phenomenologically the decoherence of the Kondo-coherent state formed in the two-terminal setup in the framework of our three-terminal model.
Key words ：
73.23.-b
73.63.Kv
72.15.Qm
75.20.Hr
出版日期: 2006-08-01
:
73.23.-b
(Electronic transport in mesoscopic systems)
73.63.Kv
(Quantum dots)
72.15.Qm
(Scattering mechanisms and Kondo effect)
75.20.Hr
(Local moment in compounds and alloys; Kondo effect, valence fluctuations, heavy fermions)
引用本文:
FANG Tie-Feng;WANG Shun-Jin;. Multiterminal Conductance and Decoherence Effect of a Three-Terminal Kondo Dot[J]. 中国物理快报, 2006, 23(8): 2213-2216.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2006/V23/I8/2213
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2006, Vol. 23 
