Trions and excitons in CdTe quantum wells: Lifetimes, coherence, diffusion and localization
2002
Abstract
We present the results of a study of the dynamics of trions and excitons in a CdTe modulationdoped quantum well as a function of temperature in the low-density regime. Using three-pulse four-wave mixing technique, we show that, at low temperature, these quasi-particles are inhomo-geneously broadened and localized due to disorder effects. At higher temperatures, trions and excitons are mobile and their homogeneous broadening is largely increased as a result of acoustic phonon scattering. Consistently, time-resolved luminescence measurements also reveal a free-particle character for trions at high temperatures.
Details
Title
Trions and excitons in CdTe quantum wells: Lifetimes, coherence, diffusion and localization
Author(s)
Portella-Oberli, M. T. ; Ciulin, V. ; Haacke, S. ; Ganiere, J. D. ; Kossacki, P. ; Kutrowski, M. ; Wojtowicz, T. ; Deveaud, B.
Published in
Physica Status Solidi B-Basic Research
Volume
234
Issue
1
Pages
294-303
Date
2002
ISSN
0370-1972
Keywords
Note
Swiss Fed Inst Technol, Inst Quantum Elect & Photon, EPFL, CH-1015 Lausanne, Switzerland. Univ Lausanne, Inst Phys Mat Condensee, Fac Sci, BSP, CH-1015 Lausanne, Switzerland. Univ Warsaw, Inst Expt Phys, PL-00681 Warsaw, Poland. Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland. Portella-Oberli, MT, Swiss Fed Inst Technol, Inst Quantum Elect & Photon, EPFL, CH-1015 Lausanne, Switzerland.
ISI Document Delivery No.: 621QL
Cited Reference Count: 25
Cited References:
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SALCEDO JR, 1978, PHYS REV LETT, V41, P131
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ISI Document Delivery No.: 621QL
Cited Reference Count: 25
Cited References:
1987, LANDOLTBORNSTEIN SEM
ANDREANI LC, 1995, NATO ADV SCI INST SE, V340, P57
BASU PK, 1991, PHYS REV B, V44, P1844
BRINKMANN D, 1999, PHYS REV B, V60, P4474
CITRIN DS, 1993, PHYS REV B, V47, P3832
CIULIN V, 2000, PHYS REV B, V62, P16310
CIULIN V, 2001, PHYS STATUS SOLIDI B, V227, P307
DEVEAUD B, 1991, PHYS REV LETT, V67, P2355
ESSER A, 2000, PHYS STATUS SOLIDI A, V178, P489
ESSER A, 2000, PHYS STATUS SOLIDI B, V221, P281
EYTAN G, 1998, PHYS REV LETT, V81, P1666
FINKELSTEIN G, 1995, PHYS REV LETT, V74, P976
HILLMER H, 1989, PHYS REV B, V39, P10901
INTONTI F, 2001, PHYS REV LETT, V87
KHENG K, 1993, PHYS REV LETT, V71, P1752
KOSSACKI P, 2002, PHYS STATUS SOLIDI B, V229, P659
MUKAMEL S, 1995, PRINCIPLES NONLINEAR
PORTELLAOBERLI MT, IN PRESS PHYS REV B, V66
RON A, 1996, SOLID STATE COMMUN, V97, P741
SALCEDO JR, 1978, PHYS REV LETT, V41, P131
SANVITTO D, 2001, SCIENCE, V294, P837
VINATTIERI A, 1994, PHYS REV B, V50, P10868
WEINER AM, 1985, J OPT SOC AM B, V2, P654
WOJTOWICZ T, 1998, APPL PHYS LETT, V73, P1379
ZIMMERMANN R, 1997, PURE APPL CHEM, V69, P1179
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2007-08-31