| Numéro |
J. Phys. IV France
Volume 7, Numéro C2, Avril 1997
Proceedings of the 9th International Conference on X-Ray Absorption Fine Structure
|
|
|---|---|---|
| Page(s) | C2-691 - C2-693 | |
| DOI | https://doi.org/10.1051/jp4:1997206 | |
Proceedings of the 9th International Conference on X-Ray Absorption Fine Structure
J. Phys. IV France 7 (1997) C2-691-C2-693
DOI: 10.1051/jp4:1997206
1 INFN, Laboratori Nazionali di Frascati, P.O. Box 13, 00044 Frascati, Italy
2 ESRF, BP. 220, 38043 Grenoble, France
3 INFM, via dell'Acciaio 139, 16152 Genova, Italy
4 Dipartimento di Chimica IFM, Univ. Torino, via P. Giuria 7, 10125 Torino, Italy
5 CSELT, via Reiss Romoli 274, 10148 Torino, Italy
6 CNR, piazzale A. Moro, 00185 Roma, Italy
© EDP Sciences 1997
J. Phys. IV France 7 (1997) C2-691-C2-693
DOI: 10.1051/jp4:1997206
Standing Waves Investigation of InAs/InP Superlattices
F. Boscherini1, 2, S. Pascarelli3, C. Lamberti4, L. Gastaldi5, R. De Martino3, 2, P. Calicchia6, 2 and F. Comin21 INFN, Laboratori Nazionali di Frascati, P.O. Box 13, 00044 Frascati, Italy
2 ESRF, BP. 220, 38043 Grenoble, France
3 INFM, via dell'Acciaio 139, 16152 Genova, Italy
4 Dipartimento di Chimica IFM, Univ. Torino, via P. Giuria 7, 10125 Torino, Italy
5 CSELT, via Reiss Romoli 274, 10148 Torino, Italy
6 CNR, piazzale A. Moro, 00185 Roma, Italy
Abstract
X-ray standing waves measurements have been performed on a set of six InAsP/InP superlattices exhibiting a wide range of lattice strain values and on both the (002) and (004) reflections. The objective was to assess the XSW technique as a structural probe in superlattices. For samples with perpendicular lattice misfit less than 1.5% we fmd clear XSW modulations in the As fluorescence ; this signal is well reproduced by simulations performed by solving the Takagi-Taupin equations. For samples with higher misfit a negligible XSW signal is found, indicating considerable lattice disorder.
© EDP Sciences 1997