Stimulated scattering of indirect excitons in coupled quantum wells: Signature of a degenerate Bose-gas of excitons

被引：174
|
作者：
Butov, LV
Ivanov, AL
Imamoglu, A
Littlewood, PB
Shashkin, AA
Dolgopolov, VT
Campman, KL
Gossard, AC
机构：
[1] Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, Russia
[2] Cardiff Univ, Dept Phys & Astron, Cardiff CF24 3YB, S Glam, Wales
[3] Univ Calif Santa Barbara, Dept Elect & Comp Engn, Santa Barbara, CA 93106 USA
[4] Univ Cambridge, Cavendish Lab, Dept Phys, TCM, Cambridge CB3 0HE, England
[5] Bell Labs, Lucent Technol, Murray Hill, NJ 07974 USA
来源：
PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 24期
关键词：
D O I：
10.1103/PhysRevLett.86.5608
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We observe and analyze strongly nonlinear photoluminescence kinetics of indirect excitons in GaAs/AlGaAs coupled quantum wells at low bath temperatures, greater than or equal to 50 mK. The long recombination lifetime of indirect excitons promotes accumulation of these Bose particles in the lowest energy states and allows the photoexcited excitons to cool down to temperatures when the: dilute 2D gas of indirect excitons becomes statistically degenerate. Our main result-a strong enhancement of the exciton scattering rate to the low-energy states with increasing concentration of the indirect excitons-reveals bosonic stimulation of exciton scattering, which is a signature of a degenerate Bose-gas of excitons.
引用
收藏
页码：5608 / 5611
页数：4
相关论文
共 50 条
  • [31] Collective properties of indirect excitons in coupled quantum wells in a random field
    Berman, OL
    Lozovik, YE
    Snoke, DW
    Coalson, RD
    PHYSICAL REVIEW B, 2004, 70 (23) : 1 - 8
  • [32] Scattering of excitons by phonons in quantum wells
    Bardyszewski, W
    Prywata, M
    ACTA PHYSICA POLONICA A, 1996, 90 (04) : 715 - 718
  • [33] Turbulence in a Bose-Einstein condensate of dipolar excitons in coupled quantum wells
    Berman, O. L.
    Kezerashvili, R. Ya.
    Kolmakov, G. V.
    Lozovik, Yu. E.
    PHYSICAL REVIEW B, 2012, 86 (04):
  • [34] Transport of indirect excitons in ZnO quantum wells
    Kuznetsova, Y. Y.
    Fedichkin, F.
    Andreakou, P.
    Calman, E. V.
    Butov, L. V.
    Lefebvre, P.
    Bretagnon, T.
    Guillet, T.
    Vladimirova, M.
    Morhain, C.
    Chauveau, J. -M.
    OPTICS LETTERS, 2015, 40 (15) : 3667 - 3670
  • [35] Bose condensation of interwell excitons in double quantum wells
    A. V. Larionov
    V. B. Timofeev
    P. A. Ni
    S. V. Dubonos
    I. Hvam
    K. Soerensen
    Journal of Experimental and Theoretical Physics Letters, 2002, 75 : 570 - 574
  • [36] Bose condensation of interwell excitons in double quantum wells
    Larionov, AV
    Timofeev, VB
    Ni, PA
    Dubonos, SV
    Hvam, I
    Soerensen, K
    JETP LETTERS, 2002, 75 (11) : 570 - 574
  • [37] TRANSFORMATION OF SPATIALLY DIRECT TO SPATIALLY INDIRECT EXCITONS IN COUPLED DOUBLE QUANTUM WELLS
    CHARBONNEAU, S
    THEWALT, MLW
    KOTELES, ES
    ELMAN, B
    PHYSICAL REVIEW B, 1988, 38 (09): : 6287 - 6290
  • [38] Direct and indirect excitons in semiconductor coupled quantum wells in an applied electric field
    Sivalertporn, K.
    Mouchliadis, L.
    Ivanov, A. L.
    Philp, R.
    Muljarov, E. A.
    PHYSICAL REVIEW B, 2012, 85 (04):
  • [39] First-order spatial coherence of indirect excitons in coupled quantum wells
    Mouchliadis, Leonidas
    Ivanov, Alexei L.
    PHYSICA STATUS SOLIDI C: CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 6, NO 2, 2009, 6 (02): : 524 - 527
  • [40] Loading indirect excitons into an electrostatic trap formed in coupled GaAs quantum wells
    Gaertner, A.
    Schuh, D.
    Holleitner, A. W.
    Kotthaus, J. P.
    PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 2008, 40 (06): : 1828 - 1831
12345