| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Phase Interference in a Multi-level Quantum-Dot System |
| ZHANG Xu-Ming, CHEN Xiao-Shuang, LU Wei |
| National Laboratory for the Infrared Physics, Shanghai Institute of Technology Physics, Chinese Academy of Sciences, Shanghai 200083 |
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| Cite this article: |
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ZHANG Xu-Ming, CHEN Xiao-Shuang, LU Wei 2009 Chin. Phys. Lett. 26 047301 |
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Abstract Considering phase interference, we investigate coherent transport in a quantum dot by using a thermopower. In the single process of the electronic transport through the quantum dot, it is shown that the phase interference between the levels of a quantum dot is like the Aharonov-Bohm effect. The result indicates that the thermopower is very sensitive to phase interference. It is also found that the phase-difference change of the different levels of the quantum dot can determine the shape of the thermopower.
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| Keywords:
73.21.La
73.23.Hk
73.23.-b
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Received: 22 October 2008
Published: 25 March 2009
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| PACS: |
73.21.La
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(Quantum dots)
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73.23.Hk
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(Coulomb blockade; single-electron tunneling)
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73.23.-b
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(Electronic transport in mesoscopic systems)
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