Cryobaric (11–100 K and 300 K, 0–65 kbar) measurements of photoluminescence in GaAs/AlxGa1−xAs multiquantum well structures are described. Results on a narrow‐well (38 Å wide) structure exhibiting both quantum well and bulk GaAs emission (from a thick buffer region) allow direct comparison of the two for the first time. We find that transitions between Γ‐derived n=1 confined levels have the same pressure coefficient, within ±0.2 meV/kbar, as the bulk E0 gap, 11.4 meV/kbar. An interaction between n=1 electron states and a state 35–40 meV below the X‐conduction minima is observed within the pressure‐induced Γ‐X crossover region for our narrow‐well sample. The proposed origin of the latter state is residual interface impurities.
REFERENCES
1.
2.
B.
Welber
, M.
Cardona
, C. K.
Kim
, and S.
Rodriguez
, Phys. Rev. B
12
, 5729
(1975
).3.
4.
5.
6.
M.
Leroux
, G.
Pelous
, F.
Raymond
, and C.
Verie
, Appl. Phys. Lett.
46
, 288
(1985
).7.
S. W.
Kirchoefer
, K.
Meehan
, N.
Holonyak
, Jr., D. A.
Gulino
, H. G.
Drickamer
, R. D.
Burnham
, and D. R.
Scifres
, Appl. Phys. Lett.
41
, 406
(1982
).8.
S. W.
Kirchoefer
, N.
Holonyak
, Jr., K.
Hess
, K.
Meehan
, D. A.
Gulino
, H. G.
Drickamer
, J. J.
Coleman
, and P. D.
Dapkus
, J. Appl. Phys.
53
, 6037
(1982
).9.
M. D.
Camras
, N.
Holonyak
, Jr., J. J.
Coleman
, H. G.
Drickamer
, R. D.
Burnham
, W.
Streifer
, D. R.
Scifres
, C.
Lindstrom
, and T. P.
Paoli
, J. Appl. Phys.
54
, 4386
(1983
).10.
U.
Venkateswaran
, M.
Chandrasekhar
, H. R.
Chandrasekhar
, T.
Wolfram
, R.
Fischer
, W. T.
Masselink
, and H.
Morkoc
, Phys. Rev. B
31
, 4106
(1985
).11.
K. K.
Mon
, K.
Hess
, and J. D.
Dow
, J. Vac. Sci. Technol.
19
, 564
(1981
).12.
J. P.
Leburton
and K.
Kahen
, Superlattices and Microstructures
1
, 49
(1985
).13.
14.
15.
16.
E. W. Williams and H. B. Bebb, in Semiconductors and Semimetals, Vol. 8, edited by R. K. Willardson and A. C. Beer (Academic, New York, 1972), Chap. 5.
17.
R. C.
Miller
, A. C.
Gossard
, W. T.
Tsang
, and O.
Munteanu
, Phys. Rev. B
25
, 3871
(1982
).18.
19.
R. C.
Miller
, D. A.
Kleinman
, W. T.
Tsang
, and A. C.
Gossard
, Phys. Rev. B
24
, 1134
(1981
).20.
S. Y.
Ren
, J. D.
Dow
, and D. J.
Wolford
, Phys. Rev. B
25
, 7661
(1982
).21.
C. Mailhiot, B. A. Weinstein, S. K. Hark, and R. D. Burnham (unpublished).
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