SPECTROSCOPIC STUDIES OF STRAINED-LAYER GASB-ALSB SUPERLATTICES

被引：4

作者：

ROCKWELL, B

CHANDRASEKHAR, HR

CHANDRASEKHAR, M

POLLAK, FH

SHEN, H

CHANG, LL

WANG, WI

ESAKI, L

机构：

[1] CUNY BROOKLYN COLL,DEPT PHYS,BROOKLYN,NY 11210

[2] IBM CORP,THOMAS J WATSON RES CTR,YORKTOWN HTS,NY 10598

来源：

SURFACE SCIENCE | 1990年 / 228卷 / 1-3期

关键词：

D O I：

10.1016/0039-6028(90)90319-4

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Photoreflectance (PR) and photoluminescence (PL) studies of GaSbAlSb multiple quantum well structures under hydrostatic pressure at cryogenic temperatures are presented. A large number of excitonic transitions from the conduction sub-hands (CB) to the light (LH) and heavy (HH) hole sub-bands are observed in PR. In contrast, the ground sub-band transition from the CB to the LH dominates the PL. The pressure coefficients get progressively smaller for the higher sub-band transitions. The PL intensity drops dramatically as the direct Γ CB crosses the L CB at ∼ 10 kbar but the PR intensity does not. However a large drop in PR signal is observed as the X CB crosses each sub-band energy. © 1990.

引用

页码：322 / 325

页数：4

共 12 条

[1] THIRD-DERIVATIVE MODULATION SPECTROSCOPY WITH LOW-FIELD ELECTROREFLECTANCE [J].