INDIRECT EXCITONS IN COUPLED QUANTUM-WELL STRUCTURES

被引：40

作者：

ZRENNER, A ^{[1
]}

LEEB, P ^{[1
]}

SCHAFER, J ^{[1
]}

BOHM, G ^{[1
]}

WEIMANN, G ^{[1
]}

WORLOCK, JM ^{[1
]}

FLOREZ, LT ^{[1
]}

HARBISON, JP ^{[1
]}

机构：

[1] BELL COMMUN RES INC,RED BANK,NJ 07701

来源：

SURFACE SCIENCE | 1992年 / 263卷 / 1-3期

关键词：

D O I：

10.1016/0039-6028(92)90396-N

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：

Two different types of indirect two-dimensional exciton systems, a real-space indirect coupled quantum well and a new type of real- and k-space indirect GaAs/AlAs quantum structure, are studied by steady state and time resoved optical spectroscopy. No clear evidence for exciton condensation is found. In the new structure dramatic narrowing of the exciton linewidth in the indirect regime is found and shown to originate from intrinsic confinement effects. A nonmonotonic behavior of the intensity of the indirect photoluminescence as a function of GAMMA-X separation is tentativily attributed to zone-edge phonon emission.

引用

页码：496 / 501

页数：6

共 7 条

[1]

DEPAULA AM, 1990, 20TH INTERNATIONAL CONFERENCE ON THE PHYSICS OF SEMICONDUCTORS, VOLS 1-3, P1421

[2] SUBPICOSECOND REAL-SPACE CHARGE-TRANSFER IN TYPE-II GAAS/ALAS SUPERLATTICES [J].