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 [J].
BAUER, GEW .
PHYSICAL REVIEW B, 1992, 45 (16) :9153-9162
[3]   Stability of optically active charged excitons in quasi-two-dimensional systems [J].
Chapman, JR ;
Johnson, NF ;
Nicopoulos, VN .
PHYSICAL REVIEW B, 1997, 55 (16) :10221-10224
[4]   Negatively and positively charged excitons in GaAs/AlxGa1-xAs quantum wells [J].
Finkelstein, G ;
Shtrikman, H ;
BarJoseph, I .
PHYSICAL REVIEW B, 1996, 53 (04) :R1709-R1712
[5]   OPTICAL SPECTROSCOPY OF A 2-DIMENSIONAL ELECTRON-GAS NEAR THE METAL-INSULATOR-TRANSITION [J].
FINKELSTEIN, G ;
SHTRIKMAN, H ;
BARJOSEPH, I .
PHYSICAL REVIEW LETTERS, 1995, 74 (06) :976-979
[6]   Comparative study of the negatively and positively charged excitons in GaAs quantum wells [J].
Glasberg, S ;
Finkelstein, G ;
Shtrikman, H ;
Bar-Joseph, I .
PHYSICAL REVIEW B, 1999, 59 (16) :10425-10428
[7]   TIME-RESOLVED PHOTOLUMINESCENCE IN THE FRACTIONAL QUANTUM HALL REGIME [J].
HEIMAN, D ;
PINCZUK, A ;
DAHL, M ;
DENNIS, BS ;
PFEIFFER, LN ;
WEST, KW .
SURFACE SCIENCE, 1994, 305 (1-3) :50-54
[8]   Magnetoluminescence oscillations of a doped (Al,Ga)As/GaAs single heterojunction [J].
Kim, YM ;
Perry, CH ;
Lee, KS ;
Rickel, DG .
PHYSICAL REVIEW B, 1999, 59 (03) :1641-1644
[9]   Long-lived charged multiple-exciton complexes in strong magnetic fields [J].
Palacios, JJ ;
Yoshioka, D ;
MacDonald, AH .
PHYSICAL REVIEW B, 1996, 54 (04) :R2296-R2299
[10]   Photoluminescence studies of quantum-well structures in pulsed magnetic fields [J].
Perry, CH ;
Kim, Y ;
Rickel, DG .
PHYSICA B, 1998, 246 :182-187
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