Photo-modulated electroreflectance and photoluminescence spectra of wurtzite GaN epilayers grown on a 6H-SiC (0001)Si or a Si (111) substrate were measured as a function of temperature. The valence band structure of a biaxially tensile-strained (−0.15% in c axis) epilayer was drastically changed compared to that in unstrained and compressively strained ones; the optical transition between the conduction and the uppermost valence band exhibiting the minimum transition energy was polarized parallel to the c axis, which is characteristic of the spin split-off valence band in unstrained crystal.

1.
For a review see, for example,
S.
Strite
and
H.
Morkoc
,
J. Vac. Sci. Technol. B
10
,
1237
(
1992
).
2.
S.
Nakamura
,
M.
Senoh
,
N.
Iwasa
,
S.
Nagahama
,
T.
Yamada
, and
T.
Mukai
,
Jpn. J. Appl. Phys.
34
,
L1332
(
1995
).
3.
S.
Nakamura
,
M.
Senoh
,
S.
Nagahama
,
N.
Iwasa
,
T.
Yamada
,
T.
Matsushita
,
H.
Kiyoku
, and
Y.
Sugimoto
,
Jpn. J. Appl. Phys.
35
,
L74
(
1996
);
S.
Nakamura
,
M.
Senoh
,
S.
Nagahama
,
N.
Iwasa
,
T.
Yamada
,
T.
Matsushita
,
H.
Kiyoku
, and
Y.
Sugimoto
,
Jpn. J. Appl. Phys.
35
,
L217
(
1996
);
S.
Nakamura
,
M.
Senoh
,
S.
Nagahama
,
N.
Iwasa
,
T.
Yamada
,
T.
Matsushita
,
H.
Kiyoku
, and
Y.
Sugimoto
,
Appl. Phys. Lett.
68
,
3269
(
1996
).
4.
I.
Akasaki
,
S.
Sota
,
H.
Sakai
,
T.
Tanaka
,
M.
Koike
, and
H.
Amano
,
Electron. Lett.
32
,
1105
(
1996
).
5.
S. Nakamura, Proceedings of 1996 Fall Meeting of the Materials Research Society, 1996, N1.1.
6.
H.
Amano
,
K.
Hiramatsu
, and
I.
Akasaki
,
Jpn. J. Appl. Phys.
27
,
L1384
(
1988
).
7.
B.
Gil
,
F.
Hamdani
, and
H.
Morcoc
,
Phys. Rev. B
54
,
7678
(
1996
).
8.
S.
Chichibu
,
A.
Shikanai
,
T.
Azuhata
,
T.
Sota
,
A.
Kuramata
,
K.
Horino
, and
S.
Nakamura
,
Appl. Phys. Lett.
68
,
3766
(
1996
);
A.
Shikanai
,
T.
Azuhata
,
T.
Sota
,
S.
Chichibu
,
A.
Kuramata
,
K.
Horino
, and
S.
Nakamura
,
J. Appl. Phys.
81
,
417
(
1997
).
9.
D.
Volm
,
K.
Oettinger
,
T.
Streibl
,
D.
Kovalev
,
M.
Ben-Chorin
,
J.
Diener
,
B. K.
Meyer
,
J.
Majewski
,
L.
Eckey
,
A.
Hoffmann
,
H.
Amano
,
I.
Akasaki
,
K.
Hiramatsu
, and
T.
Detchprohm
,
Phys. Rev. B
53
,
16543
(
1996
).
10.
B. Monemar, J. P. Bergman, I. A. Buyanova, W. Li, H. Amano, and I. Akasaki, Mater. Res. Soc. Internet J. Nitride Semicond. Res. 1, 2 (1996).
11.
H. Amano and I. Akasaki, Proceedings of 1996 Fall Meeting of the Materials Research Society, 1996, N1.2.
12.
M.
Suzuki
and
T.
Uenoyama
,
Jpn. J. Appl. Phys.
35
,
1420
(
1996
).
13.
S. L.
Chuang
,
IEEE J. Quantum Electron.
32
,
1791
(
1996
).
14.
M.
Nido
,
Jpn. J. Appl. Phys.
34
,
L1513
(
1995
).
15.
K.
Domen
,
K.
Horino
,
A.
Kuramata
, and
T.
Tanahashi
,
Appl. Phys. Lett.
70
,
987
(
1997
).
16.
M.
Suzuki
and
T.
Uenoyama
,
Jpn. J. Appl. Phys.
35
,
L953
(
1996
).
17.
K. Domen, K. Horino, A. Kuramata, and T. Tanahashi (unpublished).
18.
T.
Ohtoshi
,
A.
Niwa
, and
T.
Kuroda
,
Jpn. J. Appl. Phys.
35
,
L1566
(
1996
).
19.
A.
Watanabe
,
T.
Takeuchi
,
K.
Hirosawa
,
H.
Amano
,
K.
Hiramatsu
, and
I.
Akasaki
,
J. Cryst. Growth
128
,
391
(
1993
).
20.
K. Horino, A. Kuramata, K. Domen, R. Soejima, and T. Tanahashi, Proceedings of the International Symposium on Blue Laser and Light Emitting Diodes (Ohmusha, Ltd., Tokyo, Japan 1996), p. 530.
21.
G. L. Bir and G. E. Pikus, Symmetry and Strain-Induced Effects in Semiconductors (Wiley, New York, 1974).
22.
M.
Leszczynski
,
H.
Teisseyre
,
T.
Suski
,
I.
Grzegory
,
M.
Bockowski
,
J.
Jun
,
S.
Porowski
,
K.
Pakula
,
J.
Baranowski
,
C. T.
Foxon
, and
T. S.
Cheng
,
Appl. Phys. Lett.
69
,
73
(
1996
).
23.
S.
Chichibu
,
T.
Azuhata
,
T.
Sota
, and
S.
Nakamura
,
J. Appl. Phys.
79
,
2784
(
1996
);
Proceedings of the International Symposium on Blue Laser and Light Emitting Diodes (Ohmsha, Ltd., Tokyo, Japan 1996), p. 202;
S. Chichibu, H. Okumura, S. Nakamura, G. Feuillet, T. Azuhata, T. Sota, and S. Yoshida, Jpn. J. Appl. Phys. (to be published).
24.
W.
Shan
,
T.
Schmidt
,
X. H.
Yang
,
J. J.
Song
, and
B.
Goldenberg
,
J. Appl. Phys.
79
,
3691
(
1996
).
25.
M.
Yamaguchi
,
T.
Yagi
,
T.
Azuhata
,
T.
Sota
,
K.
Suzuki
,
S.
Chichibu
, and
S.
Nakamura
,
J. Phys., Condens. Matter.
9
,
241
(
1997
).
26.
K. P.
Korona
,
A.
Wysmolek
,
K.
Pakula
,
R.
Stepniewski
,
J. M.
Baranowski
,
I.
Grzegory
,
B.
Lucznik
,
M.
Wroblewski
, and
S.
Porowski
,
Appl. Phys. Lett.
69
,
788
(
1996
).
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