Fine structure of exciton levels in CdTe/CdMgTe quantum wells

被引：11

作者：

Kusrayev, YG ^{[1
]}

Zakharchenya, BP ^{[1
]}

Karczewski, G ^{[1
]}

Wojtowicz, T ^{[1
]}

Kossut, J ^{[1
]}

机构：

[1] POLISH ACAD SCI,INST PHYS,PL-02668 WARSAW,POLAND

来源：

SOLID STATE COMMUNICATIONS | 1997年 / 104卷 / 08期

关键词：

quantum wells; semiconductors; optical properties;

D O I：

10.1016/S0038-1098(97)00354-2

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We report on an investigation of the exchange-interaction-induced fine structure of localized excitons in single quantum wells (SQW) CdTe/CdMgTe by means of polarized luminescence. The polarization anomalies due to crossing of the Zeeman-split sublevels of optically active and inactive states have been detected. Magnitude of the splittings of localized excitons due to the isotropic exchange has been determined. When studying the optical orientation of excitons in QWs we have observed an increase of the circular-polarization degree in a longitudinal magnetic field. The mechanism responsible for this behavior is suggested to involve lowering of the ideal D-2d symmetry of QW leading to the splitting of optically active states. (C) 1997 Elsevier Science Ltd.

引用

页码：465 / 468

页数：4

共 15 条

[1] EXCHANGE INTERACTION OF EXCITONS IN GAAS HETEROSTRUCTURES
BLACKWOOD, E
SNELLING, MJ
HARLEY, RT
ANDREWS, SR
FOXON, CTB
[J]. PHYSICAL REVIEW B, 1994, 50 (19): : 14246 - 14254
[2] COURDON C, 1992, PHYS REV B, V46, P4644
[3] DZHIOEV RI, 1997, PISMA ESKP TEOR FIZ, V65, P766
[4] DZHIOEV RI, 1977, I PHYS C SER, V155, P173
[5] Fine structure splitting in the optical spectra of single GaAs quantum dots
Gammon, D
Snow, ES
Shanabrook, BV
Katzer, DS
Park, D
[J]. PHYSICAL REVIEW LETTERS, 1996, 76 (16) : 3005 - 3008
[6] Ivchenko E. L., 1995, Physics of the Solid State, V37, P768
[7] MAGNETIC-FIELD-EFFECTS ON PHOTOLUMINESCENCE POLARIZATION IN TYPE-II GAAS/ALAS SUPERLATTICES
IVCHENKO, EL
KOCHERESHKO, VP
NAUMOV, AY
URALTSEV, IN
LAVALLARD, P
[J]. SUPERLATTICES AND MICROSTRUCTURES, 1991, 10 (04) : 497 - 501
[8] IVCHENKO EL, 1995, PURE APPL CHEM, V67, P463, DOI 10.1117/12.200991
[9] IVCHENKO EL, 1995, SUPERLATTICES OTHER
[10] OBSERVATION OF NEGATIVELY CHARGED EXCITONS X- IN SEMICONDUCTOR QUANTUM-WELLS
KHENG, K
COX, RT
DAUBIGNE, YM
BASSANI, F
SAMINADAYAR, K
TATARENKO, S
[J]. PHYSICAL REVIEW LETTERS, 1993, 71 (11) : 1752 - 1755

← 1 2 →