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)
aSchool of Physics Science and Technology, Zhanjiang Normal University, Zhanjiang 524048, China; bCenter of Liberal Education, Zhanjiang Normal University, Zhanjiang 524048, China; c Shenzhen Institute of Advanced Integration Technology, Shenzhen 518055, China
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.
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
[1]
Büttiker M 1993 J. Phys. Condens. Matter 5 9361
[2]
Christen T and Büttiker M 1996 Phys. Rev. Lett. 77 143
[3]
Büttiker M, Pretre A and Thomas H 1993 Phys. Rev. Lett. 70 4114
[4]
Li X Q, Luo J Y, Yang Y G, Cui P and Yan Y J 2005 Phys. Rev. B 71 205304
[5]
Li X Q and Su Z B 1996 Phys. Rev. B bf54 10807
[6]
Ji Y H, Lei M S and Ouyang C Y 2002 Chin. Phys. bf11 163
[7]
Büttiker M and Martin A M 2000 Phys. Rev. B bf61 2737
[8]
Dong Z C 1999 Acta Phys. Sin. 48 511 (in Chinese)
[9]
Li T C and Lu P S 2008 Phys. Rev. B bf77 85408
[10]
Xu H and Song W P 2002 Acta Phys. Sin. bf51 1798 (in Chinese)
[11]
Wang C and Zhang Y H 2006 Chin. Phys. bf15 2120
[12]
Wang J, Guo H, Jose-Luis M, Wan C C, Taraschi G and Zheng Q R 1998 Phys. Rev. Lett. bf80 4277
[13]
Pretre A, Thomas H and Büttiker M 1996 Phys. Rev. B bf54 8130
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