COHERENT AND ESCAPE TUNNELING PROCESSES IN ASYMMETRIC COUPLED QUANTUM-WELLS

被引：10

作者：

CRUZ, H ^{[1
]}

MUGA, JG ^{[1
]}

机构：

[1] UNIV LA LAGUNA, DEPT FIS FUNDAMENTAL & EXPTL, E-38204 San Cristobal la Laguna, SPAIN

来源：

JOURNAL OF APPLIED PHYSICS | 1992年 / 72卷 / 12期

关键词：

D O I：

10.1063/1.351929

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The dynamics of electrons in a Ga1-xAlxAs-GaAs asymmetric double quantum well heterostructure under an external applied electric field is studied. In particular, we examine the coupling between two different tunneling processes: coherent tunneling between the two quantum wells and escape tunneling to the GaAs bulk. Simple hydrodynamical models are proposed to account for the observed features. The effect of a longitudinal magnetic field on both tunneling processes is also analyzed. In this coupled quantum well system, the possibility exists of a direct observation of an oscillating luminescence signal with a quantum tunneling period modulated by means of an applied longitudinal magnetic field.

引用

页码：5750 / 5755

页数：6

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