Abstract By developing the recursive Green function method, the transport properties through a quantum wire embedding a finite-length saw-tooth superlattice are studied in the presence of magnetic field. The effects of magnetic modulation and the geometric structures of the superlattice on transmission coefficient are discussed. It is shown that resonant peak splitting of this kind of structure is different from that of ‘magnetic' and ‘electric' superlattices in two-dimensional electron gas. The transmission spectrum can be tailored to match requirements through adjusting the size of saw-tooth quantum dot and field strength.
Received: 17 November 2003
Revised: 27 April 2004
Accepted manuscript online:
Fund: Project supported by National Major Project of China (Grant No 1999-0645-4500), and Scientific Research Fund of Hunan Provincial Education Department, China (Grant No 02C572).
Cite this article:
Chen Yuan-Ping (陈元平), Yan Xiao-Hong (颜晓红), Lu Mao-Wang (卢卯旺), Deng Yu-Xiang (邓宇翔) Electron transport across a quantum wire embedding a saw-tooth superlattice 2004 Chinese Physics 13 1537
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