结构和磁场对三势垒结构中共振隧穿时间的影响

贾国治; 姚江宏; 何进密; 于 沛

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结构和磁场对三势垒结构中共振隧穿时间的影响

论文 | 更新时间：2020-08-12

- 结构和磁场对三势垒结构中共振隧穿时间的影响
- The Effect of Structure and Magnetic Field on Resonant Tunneling Time in Triple-barrier Structures
- 发光学报 2010年31卷第3期页码：341-347
- 作者机构：
  
  1. 天津城市建设学院天津,300384
  2. 弱光非线性光子学教育部重点实验室南开大学泰达应用物理学院天津,300475
- 作者简介：
- 基金信息：
- DOI：
  中图分类号： O471.1
- 收稿日期：2009-11-09，
  
  修回日期：1900-01-02，
  
  网络出版日期：2010-06-30，
  
  纸质出版日期：2010-06-30
- 稿件说明：
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贾国治, 姚江宏, 何进密, 等. 结构和磁场对三势垒结构中共振隧穿时间的影响[J]. 发光学报, 2010,31(3):341-347.

JIA Guo-zhi, YAO Jiang-hong, HE Jin-mi, et al. The Effect of Structure and Magnetic Field on Resonant Tunneling Time in Triple-barrier Structures[J]. Chinese journal of luminescence, 2010, 31(3): 341-347.
贾国治, 姚江宏, 何进密, 等. 结构和磁场对三势垒结构中共振隧穿时间的影响[J]. 发光学报, 2010,31(3):341-347. DOI：

JIA Guo-zhi, YAO Jiang-hong, HE Jin-mi, et al. The Effect of Structure and Magnetic Field on Resonant Tunneling Time in Triple-barrier Structures[J]. Chinese journal of luminescence, 2010, 31(3): 341-347. DOI：

摘要

为了理解在三势垒结构中准束缚能级

和隧穿寿命对磁场的依赖性

采用传输矩阵的方法研究了在三势垒结构中的共振隧穿过程。分别研究了在三势垒结构中的透射几率特征和隧穿寿命。结果表明:随着中间势垒厚度L的增加

第一准束缚能级E

增加

而第二准束缚能级E

却减小。随着磁场强度B和朗道量子数n的增加

与第一和第二准束缚能级(E

)对应的寿命τ缩短。对于B=15 和 n=15的情况

L对τ的影响很小。

Abstract

To understand the dependence of the quasi-bound level energies

and the tunneling lifetime on the magnetic fields

resonant tunneling in the triple-barrier structure was investigated by using the transfer matrix method. Transmission probability characteristics and the tunneling lifetime in the triple-barrier structure are investigated

respectively. The results showed that the first quasi-bound energy levels

increase

while the second quasi-bound energy levels

decrease with the increasing of the middle barrier thickness

. The lifetime

and

is shor-tened with increasing of

and Landau quantum number

and the effect of

is weak for

=15 and

=15.

关键词

Keywords

references

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