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Chinese Physics, 2007, Vol. 16(2): 511-516    DOI: 10.1088/1009-1963/16/2/037
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev   Next  

A resistance formula for coherent multi-barrier structures

Zhang Zhi-Chen(张致琛) and Yang Jian-Hong(杨建红)
Institute of Microelectronics, Lanzhou University, Lanzhou 730000, China
Abstract  Using the Landauer formula and the quantum S-matrix scattering theory, we derive a resistance formula for multi-barrier structure under phase coherent transmission condition. This formula shows that when the transport is coherent, the potential wells of the structure are just like conductors contributing to the overall resistance. And because the resistance formula is derived based on the scattering theory, the barrier resistance will change with the number of scattering centres (i.e. the number of barriers) in the structure.
Keywords:  resistance      phase coherent transmission      multi-barrier structure  
Received:  06 June 2006      Revised:  17 August 2006      Accepted manuscript online: 
PACS:  72.10.-d (Theory of electronic transport; scattering mechanisms)  

Cite this article: 

Zhang Zhi-Chen(张致琛) and Yang Jian-Hong(杨建红) A resistance formula for coherent multi-barrier structures 2007 Chinese Physics 16 511

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