EDP Sciences Journals List
Issue J. Phys. IV France
Volume 7, Number C2, Avril 1997
Proceedings of the 9th International Conference on X-Ray Absorption Fine Structure
Page(s) C2-1245 - C2-1246
DOI http://dx.doi.org/10.1051/jp4:19972215

Proceedings of the 9th International Conference on X-Ray Absorption Fine Structure

J. Phys. IV France 7 (1997) C2-1245-C2-1246

DOI: 10.1051/jp4:19972215

Temperature Dependent Local Instability of the Hg1212 Structure by Polarized EXAFS

N.L. Saini1, M. Brunelli1, A. Lanzara1, M. Lusignoli1, T. Rossetti1, A. Bianconi1, P. Bordet2, F. Duc2, J.L. Hazemann2 and J. Karpinski3

1  Dipartimento di Fisica, Università di Roma "La Sapienza", P.A. Moro 2, 00185 Roma, Italy
2  Laboratoire de Cristallographie CNRS, avenue des Martyrs, 38042 Grenoble, France
3  Solid State Physics Laboratory, Swiss Federal Institute of Technology, ETH Hönggeberg 8093, Switzerland


Abstract
The local structure of the (Hg1212) crystal has been investigated by temperature dependent polarized Cu K-edge extended x-ray absorption fine structure (EXAFS). We have observed an anomalous behavior of the local structure showing anomaly at around the superconducting transition temperature Tc in the temperature dependence of the Cu-O(planar) distance. The result suggests similarity of the temperature dependent local instability in the superconducting cuprates.



© EDP Sciences 1997