OPTICAL-TRANSMISSION OF ASYMMETRIC COUPLED QUANTUM-WELLS UNDER CROSSED ELECTRIC AND MAGNETIC-FIELDS

被引：1

作者：

SALVADOR, A

TERAGUCHI, N

REED, J

MORKOC, H

机构：

[1] UNIV ILLINOIS,MAT RES LAB,URBANA,IL 61801

[2] UNIV ILLINOIS,DEPT PHYS,URBANA,IL 61801

来源：

PHYSICAL REVIEW B | 1992年 / 46卷 / 19期

关键词：

D O I：

10.1103/PhysRevB.46.12757

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Low-temperature optical-transmission measurements in asymmetric GaAs coupled quantum wells under crossed electric and magnetic fields suggest orbit-center-dependent energy subbands. The applied electric field brings the conduction subbands into resonance, monitored by comparing the relative intensity of spatially direct and indirect excitonic peaks. Under an applied magnetic field parallel to the plane of the quantum-well layers, the energy separation between the conduction subbands is either reduced or increased depending on the location of the orbit center. This is confirmed by observed shifts in the applied electric field that are required to bring the conduction electron-energy levels to resonance.

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页码：12757 / 12760

页数：4

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