Lateral composition modulation in InAsAlAs short-period superlattices was investigated by x-ray grazing-incidence diffraction and coplanar x-ray diffraction at a “normal” wavelength and at an anomalous wavelength, for which diffraction from the (200) planes does not exhibit a chemical contrast. The experimental data were compared with theoretical simulations assuming that the interfaces consist of a periodic sequence of monoatomic steps. The displacement field in the superlattice was calculated by continuum elasticity and using a valence-force field method. From the fit of the experimental data to the theory, the lengths of individual atomic terraces were determined.

1.
J. Mirecki
Millunchick
,
R. D.
Twesten
,
D. M.
Follstaedt
,
S. R.
Lee
,
E. D.
Jones
,
Y.
Zhang
,
S. P.
Ahrenkiel
, and
A.
Mascarenhas
,
Appl. Phys. Lett.
70
,
1402
(
1997
).
2.
K. Y.
Cheng
,
K. C.
Hsieh
, and
J. N.
Baillargeon
,
Appl. Phys. Lett.
60
,
2892
(
1992
).
3.
L. E.
Shilkrot
,
D. J.
Srolovitz
, and
J.
Tersoff
,
Phys. Rev. B
62
,
8397
(
2000
).
4.
F.
Glas
,
J. Appl. Phys.
62
,
3201
(
1987
).
5.
D. M.
Follstaedt
,
R. D.
Twesten
,
J. Mirecki
Millunchick
,
S. R.
Lee
,
E. D.
Jones
,
S. P.
Ahrenkiel
,
Y.
Zhang
, and
A.
Mascarenhas
,
Physica E (Amsterdam)
2
,
325
(
1998
).
6.
A. G.
Norman
 et al,
Appl. Phys. Lett.
73
,
1844
(
1998
).
7.
E. D.
Jones
,
J. Mirecki
Millunchick
,
D.
Follstaedt
,
S.
Lee
,
J.
Reno
,
R. D.
Twesten
,
Y.
Zhang
, and
A.
Mascarenhas
,
Physica E (Amsterdam)
2
,
44
(
1998
).
8.
S.
Francoer
,
A. G.
Norman
,
M. C.
Hanna
,
A.
Mascarenhas
,
J. L.
Reno
,
D. M.
Follstaedt
, and
S. R.
Lee
,
Mater. Sci. Eng., B
B88
,
118
(
2002
).
9.
J. H.
Li
 et al,
Appl. Phys. Lett.
78
,
219
(
2002
).
10.
A. G.
Norman
 et al,
Mater. Res. Soc. Symp. Proc.
583
,
297
(
2000
).
11.
J. H.
Li
,
V.
Holý
,
M.
Meduna
,
S. C.
Moss
,
A. G.
Norman
,
A.
Mascarenhas
, and
J. L.
Reno
,
Phys. Rev. B
66
,
115312
(
2002
).
12.
T.
Roch
,
V.
Holý
,
A.
Hesse
,
J.
Stangl
,
T.
Fromherz
,
G.
Bauer
,
T. H.
Metzger
, and
S.
Ferrer
,
Phys. Rev. B
65
,
245324
(
2002
).
13.
R. M.
Martin
,
Phys. Rev. B
1
,
4005
(
1970
).
14.
C.
Dorin
,
J. Mirecki
Millunchick
,
Y.
Chen
,
B. G.
Orr
, and
C. A.
Pearson
,
Appl. Phys. Lett.
79
,
4118
(
2001
).
15.
P. N.
Keating
,
Phys. Rev.
145
,
637
(
1966
).
16.
H.
Jiang
and
J.
Singh
,
Phys. Rev. B
56
,
4696
(
1997
).
17.
S. K.
Sinha
,
E. B.
Sirota
,
S.
Garoff
, and
H. B.
Stanley
,
Phys. Rev. B
38
,
2297
(
1988
).
18.
V.
Holý
,
U.
Pietsch
, and
T.
Baumbach
,
High-Resolution X-ray Scattering from Thin Films and Multilayers
(
Springer
, Berlin,
1999
).
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