Spontaneous Emission of Highly Excited Gaas/(Ga,Al)as Quantum-Wells

We report on a transparent analysis of the luminescence spectra of dense electron-hole plasmas confined in GaAs/(Ga,Al)As quantum wells. We fit the spectra using the fact that the total number of particle states does not depend on collision broadening. Further, the effective dispersion of the valence and conduction subbands and the dependence of the optical matrix elements on wavevector is accounted for. We find (a) that the lowest subbands shift almost rigidly with changing plasma density, and (b) that the theoreticallly calculated band gap shrinkage (random phase approximation) is always higher than the experimental values.


Published in:
Solid State Communications, 84, 3, 307-311
Year:
1992
ISSN:
0038-1098
Keywords:
Note:
Ecole polytech fed lausanne,inst phys appl,ch-1015 lausanne,switzerland. Bongiovanni, g, univ cagliari,dipartimento sci fis,via osped 72,i-09124 cagliari,italy.
ISI Document Delivery No.: JV158
Times Cited: 6
Cited Reference Count: 25
Cited References:
ASADA M, 1989, IEEE J QUANTUM ELECT, V25, P2019
BONGIOVANNI G, 1988, PHYS STATUS SOLIDI B, V150, P685
BONGIOVANNI G, 1989, PHYS REV B, V39, P8359
BONGIOVANNI G, 1990, SUPERLATTICE MICROST, V8, P81
BONGIOVANNI G, 1991, SOLID STATE COMMUN, V80, P473
BONGIOVANNI G, 1991, SUPERLATTICE MICROST, V9, P479
CAPIZZI M, 1984, PHYS REV B, V29, P2028
DASSARMA S, 1989, PHYS REV B, V39, P5516
DEVAUD B, 1990, SUPERLATTICE MICROST, V8, P85
HAUG H, 1984, PROG QUANT ELECTRON, V9, P3
KLINGSHIRN C, 1981, PHYS REP, V70, P315
KULAKOVSKII VD, 1989, PHYS REV B, V40, P8087
LACH E, 1990, PHYS REV B, V42, P5395
MAHAN GD, 1981, MANY PARTICLE PHYSIC
MARMORKOS IK, 1991, PHYS REV B, V44, P3451
PAVESI L, 1988, J PHYS C SOLID STATE, V21, P1485
PINCZUK A, 1981, PHYS REV LETT, V46, P1341
SANDERS GD, 1987, PHYS REV B, V35, R1300
SCHLAAD KH, 1991, PHYS REV B, V43, P4268
SCHMITTRINK S, 1986, PHYS REV B, V33, P1183
SELLONI A, 1984, PHYS REV B, V30, P821
TRANKLE G, 1987, PHYS REV LETT, V58, P419
VONALLMEN P, COMMUNICATION
WEBER C, 1988, PHYS REV B, V38, P12748
ZIMMERMANN R, 1990, SUPERLATTICE MICROST, V7, P433
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