CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Dynamic electron transport theory for multiprobe mesoscopic structures |
Quan Jun(全军)a), Tian Ying (田英)b), Zhang Jun(张军)a)c)†, and Shao Le-Xi(邵乐喜)a) |
a School of Physics Science and Technology, Zhanjiang Normal University, Zhanjiang 524048, China; b Center of Liberal Education, Zhanjiang Normal University, Zhanjiang 524048, China; c Shenzhen Institute of Advanced Integration Technology, Shenzhen 518055, China |
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Abstract Using the linear response theory and random phase approximation, we develop a general dynamic electron transport theory for multiprobe mesoscopic structures in an arbitrarily time-dependent external field. In this case, the responses of the dynamic current, charge and internal potential to the external fields can be determined self-consistently. Without loss of generality, charge (current) conservation and gauge invariance under a potential shift are satisfied. As an example, we employ a quantum wire with a single barrier to discuss the response of the internal potential.
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Received: 30 December 2010
Revised: 06 March 2011
Accepted manuscript online:
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PACS:
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72.10.-d
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(Theory of electronic transport; scattering mechanisms)
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73.23.-b
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(Electronic transport in mesoscopic systems)
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Cite this article:
Quan Jun(全军), Tian Ying (田英), Zhang Jun(张军), and Shao Le-Xi(邵乐喜) Dynamic electron transport theory for multiprobe mesoscopic structures 2011 Chin. Phys. B 20 077201
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