INPLANE TRANSPORT OF EXCITONS IN QUANTUM-WELL STRUCTURES

被引：8

作者：

TAKAHASHI, Y

MURAKI, K

FUKATSU, S

KANO, SS

SHIRAKI, Y

ITO, R

机构：

[1] UNIV TOKYO, ADV SCI & TECHNOL RES CTR, MEGURO KU, TOKYO, TOKYO 153, JAPAN

[2] UNIV TOKYO, DEPT APPL PHYS, BUNKYO KU, TOKYO, TOKYO 113, JAPAN

来源：

SOLID STATE COMMUNICATIONS | 1993年 / 88卷 / 09期

关键词：

D O I：

10.1016/0038-1098(93)90623-U

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have investigated the in-plane transport of photoexcited carriers and excitons in Al0.3Ga0.7As/GaAs quantum well structures as a function of excitation photon energy and temperature at low carrier density (10(8) cm(-2)). We have discovered a strong correlation between the diffusivity and the excitation photon energy; the exciton diffusivity becomes quenched as the excitation photon energy decreases closer to the heavy-hole exciton state. We have also found significant enhancement of diffusivity when a light-hole exciton state is resonantly excited. We attribute the enhancement to the difference between exciton scattering and free carrier scattering.

引用

页码：677 / 681

页数：5

共 9 条

[1] LOCALIZED AND DELOCALIZED TWO-DIMENSIONAL EXCITONS IN GAAS-ALGAAS MULTIPLE-QUANTUM-WELL STRUCTURES
HEGARTY, J
GOLDNER, L
STURGE, MD
[J]. PHYSICAL REVIEW B, 1984, 30 (12): : 7346 - 7348
[2] ENHANCEMENT OF ELECTRON-HOLE PAIR MOBILITIES IN THIN GAAS/ALXGA1-XAS QUANTUM-WELLS
HILLMER, H
FORCHEL, A
TU, CW
[J]. PHYSICAL REVIEW B, 1992, 45 (03): : 1240 - 1245
[3] OPTICAL INVESTIGATIONS ON THE MOBILITY OF TWO-DIMENSIONAL EXCITONS IN GAAS/GA1-XALXAS QUANTUM WELLS
HILLMER, H
FORCHEL, A
HANSMANN, S
MOROHASHI, M
LOPEZ, E
MEIER, HP
PLOOG, K
[J]. PHYSICAL REVIEW B, 1989, 39 (15): : 10901 - 10912
[4] COLLISION BROADENING OF TWO-DIMENSIONAL EXCITONS IN A GAAS SINGLE QUANTUM WELL
HONOLD, A
SCHULTHEIS, L
KUHL, J
TU, CW
[J]. PHYSICAL REVIEW B, 1989, 40 (09): : 6442 - 6445
[5] QUANTUM SIZE EFFECT IN THE TRANSPORT OF ELECTRONS IN SEMICONDUCTOR QUANTUM WELL STRUCTURES
OGALE, SB
MADHUKAR, A
[J]. JOURNAL OF APPLIED PHYSICS, 1984, 55 (02) : 483 - 486
[6] ULTRAFAST PHASE RELAXATION OF EXCITONS VIA EXCITON-EXCITON AND EXCITON-ELECTRON COLLISIONS
SCHULTHEIS, L
KUHL, J
HONOLD, A
TU, CW
[J]. PHYSICAL REVIEW LETTERS, 1986, 57 (13) : 1635 - 1638
[7] PHONON-WIND-DRIVEN TRANSPORT OF PHOTOEXCITED CARRIERS IN A SEMICONDUCTOR QUANTUM WELL
SMITH, LM
PRESTON, JS
WOLFE, JP
WAKE, DR
KLEM, J
HENDERSON, T
MORKOC, H
[J]. PHYSICAL REVIEW B, 1989, 39 (03): : 1862 - 1870
[8] TRANSPORT OF DEGENERATE ELECTRON-HOLE PLASMAS IN SI AND GE
WOLFE, JP
[J]. JOURNAL OF LUMINESCENCE, 1985, 30 (1-4) : 82 - 113
[9] INPLANE TRANSPORT OF PHOTOEXCITED CARRIERS IN GAAS QUANTUM-WELLS
YOON, HW
WAKE, DR
WOLFE, JP
MORKOC, H
[J]. PHYSICAL REVIEW B, 1992, 46 (20): : 13461 - 13470

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