Charged exciton dynamics in GaAs quantum wells

被引：90

作者：

Finkelstein, G ^{[1
]}

Umansky, V

Bar-Joseph, I

Ciulin, V

Haacke, S

Ganiere, JD

Deveaud, B

机构：

[1] Weizmann Inst Sci, Dept Condensed Matter Phys, IL-76100 Rehovot, Israel

[2] Swiss Fed Inst Technol, Dept Phys, Inst Micro & Optoelect, CH-1015 Lausanne, Switzerland

来源：

PHYSICAL REVIEW B | 1998年 / 58卷 / 19期

关键词：

D O I：

10.1103/PhysRevB.58.12637

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study the dynamics of the charged and neutral excitons in a modulation-doped GaAs quantum well by time-resolved photoluminescence under a resonant excitation. The radiative lifetime of the charged exciton is found to be surprisingly short, 60 ps. This time is temperature independent between 2 and 10 K, and increases by a factor of 2 at 6 T. We discuss our findings in view of present theories of exciton radiative decay. [S0163-1829(98)03143-9].

引用

页码：12637 / 12640

页数：4

共 18 条

[1] AGRANOVI.VM, 1966, JETP LETT-USSR, V3, P223
[2] RADIATIVE LIFETIME OF FREE-EXCITONS IN QUANTUM-WELLS
ANDREANI, LC
TASSONE, F
BASSANI, F
[J]. SOLID STATE COMMUNICATIONS, 1991, 77 (09) : 641 - 645
[3] ELECTRON-CONCENTRATION-DEPENDENT QUANTUM-WELL LUMINESCENCE - EVIDENCE FOR A NEGATIVELY CHARGED EXCITON
BUHMANN, H
MANSOURI, L
WANG, J
BETON, PH
MORI, N
EAVES, L
HENINI, M
POTEMSKI, M
[J]. PHYSICAL REVIEW B, 1995, 51 (12): : 7969 - 7972
[4] RADIATIVE LIFETIMES OF EXCITONS IN QUANTUM-WELLS - LOCALIZATION AND PHASE-COHERENCE EFFECTS
CITRIN, DS
[J]. PHYSICAL REVIEW B, 1993, 47 (07): : 3832 - 3841
[5] DYNAMICS OF EXCITON FORMATION AND RELAXATION IN GAAS QUANTUM-WELLS
DAMEN, TC
SHAH, J
OBERLI, DY
CHEMLA, DS
CUNNINGHAM, JE
KUO, JM
[J]. PHYSICAL REVIEW B, 1990, 42 (12): : 7434 - 7438
[6] ENHANCED RADIATIVE RECOMBINATION OF FREE-EXCITONS IN GAAS QUANTUM-WELLS
DEVEAUD, B
CLEROT, F
ROY, N
SATZKE, K
SERMAGE, B
KATZER, DS
[J]. PHYSICAL REVIEW LETTERS, 1991, 67 (17) : 2355 - 2358
[7] Near-field spectroscopy of a gated electron gas: A direct evidence for electron localization
Eytan, G
Yayon, Y
Rappaport, M
Shtrikman, H
Bar-Joseph, I
[J]. PHYSICAL REVIEW LETTERS, 1998, 81 (08) : 1666 - 1669
[8] Negatively and positively charged excitons in GaAs/AlxGa1-xAs quantum wells
Finkelstein, G
Shtrikman, H
BarJoseph, I
[J]. PHYSICAL REVIEW B, 1996, 53 (04) : R1709 - R1712
[9] RAPID RADIATIVE DECAY AND ENHANCED OPTICAL NONLINEARITY OF EXCITONS IN A QUANTUM WELL
HANAMURA, E
[J]. PHYSICAL REVIEW B, 1988, 38 (02): : 1228 - 1234
[10] EXCITON DYNAMICS OF GAAS/ALXGA1-XAS DOPED QUANTUM-WELLS
HARRIS, CI
MONEMAR, B
KALT, H
HOLTZ, PO
SUNDARAM, M
MERX, JL
GOSSARD, AC
[J]. PHYSICAL REVIEW B, 1994, 50 (24): : 18367 - 18374

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