| Original Articles |
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Multiterminal Conductance and Decoherence Effect of a Three-Terminal Kondo Dot |
| FANG Tie-Feng1;WANG Shun-Jin1,2 |
| 1Department of Modern Physics, Lanzhou University, Lanzhou 730000
2Department of Physics, Sichuan University, Chengdu 610064 |
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| Cite this article: |
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FANG Tie-Feng, WANG Shun-Jin 2006 Chin. Phys. Lett. 23 2213-2216 |
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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.
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| Keywords:
73.23.-b
73.63.Kv
72.15.Qm
75.20.Hr
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Published: 01 August 2006
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| PACS: |
73.23.-b
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(Electronic transport in mesoscopic systems)
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73.63.Kv
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(Quantum dots)
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72.15.Qm
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(Scattering mechanisms and Kondo effect)
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75.20.Hr
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(Local moment in compounds and alloys; Kondo effect, valence fluctuations, heavy fermions)
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