Magnetic-field-induced charged exciton studies in a GaAs/Al0.3Ga0.7As single heterojunction

被引：27
作者：
Kim, Y
Munteanu, FM
Perry, CH
Rickel, DG
Simmons, JA
Reno, JL
机构：
[1] Univ Calif Los Alamos Natl Lab, High Field Magnet Lab, Los Alamos, NM 87545 USA
[2] Northeastern Univ, Dept Phys, Boston, MA 02115 USA
[3] Sandia Natl Labs, Albuquerque, NM 87185 USA
来源：
PHYSICAL REVIEW B | 2000年 / 61卷 / 07期
关键词：
D O I：
10.1103/PhysRevB.61.4492
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The magnetophotoluminescence (MPL) behavior of a GaAs/Al0.3Ga0.7As single heterojunction has been investigated to 60 T. We observed negatively charged singlet (X-s(-)) and triples (X-t(-)) exciton states that are formed at high magnetic fields beyond the v=1 quantum Hall state. The variation of the charged exciton binding energies are in good agreement with theoretical predictions. The MPL transition intensities for the X-s(-) and X-t(-) states showed variations (maxima and minima) at the v=1/3 and 1/5 fractional quantum Hall states as a consequence of a large reduction of electron-hole screening at these filling factors.
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页码：4492 / 4495
页数：4
相关论文
共 18 条
  • [1] ANDERSON PW, 1958, PHYS REV, V109, P1498
  • [2] EXCITONS IN THE QUASI-2-DIMENSIONAL ELECTRON-GAS
    BAUER, GEW
    [J]. PHYSICAL REVIEW B, 1992, 45 (16): : 9153 - 9162
  • [3] Stability of optically active charged excitons in quasi-two-dimensional systems
    Chapman, JR
    Johnson, NF
    Nicopoulos, VN
    [J]. PHYSICAL REVIEW B, 1997, 55 (16): : 10221 - 10224
  • [4] 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
  • [5] OPTICAL SPECTROSCOPY OF A 2-DIMENSIONAL ELECTRON-GAS NEAR THE METAL-INSULATOR-TRANSITION
    FINKELSTEIN, G
    SHTRIKMAN, H
    BARJOSEPH, I
    [J]. PHYSICAL REVIEW LETTERS, 1995, 74 (06) : 976 - 979
  • [6] Comparative study of the negatively and positively charged excitons in GaAs quantum wells
    Glasberg, S
    Finkelstein, G
    Shtrikman, H
    Bar-Joseph, I
    [J]. PHYSICAL REVIEW B, 1999, 59 (16) : 10425 - 10428
  • [7] TIME-RESOLVED PHOTOLUMINESCENCE IN THE FRACTIONAL QUANTUM HALL REGIME
    HEIMAN, D
    PINCZUK, A
    DAHL, M
    DENNIS, BS
    PFEIFFER, LN
    WEST, KW
    [J]. SURFACE SCIENCE, 1994, 305 (1-3) : 50 - 54
  • [8] Magnetoluminescence oscillations of a doped (Al,Ga)As/GaAs single heterojunction
    Kim, YM
    Perry, CH
    Lee, KS
    Rickel, DG
    [J]. PHYSICAL REVIEW B, 1999, 59 (03): : 1641 - 1644
  • [9] Long-lived charged multiple-exciton complexes in strong magnetic fields
    Palacios, JJ
    Yoshioka, D
    MacDonald, AH
    [J]. PHYSICAL REVIEW B, 1996, 54 (04) : R2296 - R2299
  • [10] Photoluminescence studies of quantum-well structures in pulsed magnetic fields
    Perry, CH
    Kim, Y
    Rickel, DG
    [J]. PHYSICA B, 1998, 246 : 182 - 187
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