Neutron diffraction study of the lattice distortion related to charge ordering in Sr14Cu24O41

M. Braden, J. Etrillard, A. Gukasov, U. Ammerahl, and A. Revcolevschi
Phys. Rev. B 69, 214426 – Published 24 June 2004

Abstract

Using elastic neutron scattering on a triple axis spectrometer we have studied the temperature dependence of the crystal structure in Sr14Cu24O41 across the range where charge ordering phenomena are expected. Several superstructure reflections are observed at low temperature which fully disappear above 200K. Most of these reflections can be explained by a modulation of both the chain and the ladder-lattices due to the charge ordering. However, the peak position as well as some weaker reflections point to a close connection between the charge ordering and the modulations of the incommensurate composite structure.

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  • Received 30 January 2004

DOI:https://doi.org/10.1103/PhysRevB.69.214426

©2004 American Physical Society

Authors & Affiliations

M. Braden1,*, J. Etrillard2, A. Gukasov3, U. Ammerahl1,4, and A. Revcolevschi4

  • 1II. Physikalisches Institut, Universität zu Köln, Zülpicher Strasse 77, D-50937 Köln, Germany
  • 2Groupe Matière Condensée et Matériaux, UMR au CNRS 6626, Université de Rennes I, 35042 Rennes Cedex, France
  • 3Laboratoire Léon Brillouin, C.E.A.∕C.N.R.S., F-91191 Gif-sur-Yvette Cedex, France
  • 4Laboratoire de Physico-Chimie de l’Etat Solide, Université Paris Sud, 91405 Orsay Cedex, France

  • *Electronic address: braden@ph2.uni-koeln.de

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Issue

Vol. 69, Iss. 21 — 1 June 2004

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