Electron transport across a quantum wire embedding a saw-tooth superlattice

doi:10.1088/1009-1963/13/9/030

中国物理B ›› 2004, Vol. 13 ›› Issue (9): 1537-1543.doi: 10.1088/1009-1963/13/9/030

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

Electron transport across a quantum wire embedding a saw-tooth superlattice

陈元平, 颜晓红, 卢卯旺, 邓宇翔

Institute of Modern Physics and Department of Physics, Xiangtan University, Xiangtan 411105, China

收稿日期:2003-11-17 修回日期:2004-04-27 出版日期:2005-06-21 发布日期:2005-06-21
基金资助:
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).

Electron transport across a quantum wire embedding a saw-tooth superlattice

Chen Yuan-Ping (陈元平), Yan Xiao-Hong (颜晓红), Lu Mao-Wang (卢卯旺), Deng Yu-Xiang (邓宇翔)

Institute of Modern Physics and Department of Physics, Xiangtan University, Xiangtan 411105, China

Received:2003-11-17 Revised:2004-04-27 Online:2005-06-21 Published:2005-06-21
Supported by:
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).

摘要/Abstract

摘要： 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.

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.

Key words: finite-length superlattice, saw-tooth quantum dot

中图分类号: (Quantum wires)

73.63.Nm

73.63.Kv (Quantum dots) 73.21.Cd (Superlattices)

陈元平, 颜晓红, 卢卯旺, 邓宇翔. Electron transport across a quantum wire embedding a saw-tooth superlattice[J]. 中国物理B, 2004, 13(9): 1537-1543.

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[J]. Chinese Physics, 2004, 13(9): 1537-1543.

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Electron transport across a quantum wire embedding a saw-tooth superlattice

Electron transport across a quantum wire embedding a saw-tooth superlattice

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