Zener Polaron Ordering in Half-Doped Manganites

A. Daoud-Aladine, J. Rodríguez-Carvajal, L. Pinsard-Gaudart, M. T. Fernández-Díaz, and A. Revcolevschi
Phys. Rev. Lett. 89, 097205 – Published 13 August 2002; Erratum Phys. Rev. Lett. 89, 129902 (2002)

Abstract

We have refined the crystal structures of a Pr0.60Ca0.40MnO3 single crystal from neutron diffraction data. The result at low temperature gives a superstructure that cannot be interpreted as Mn3+/Mn4+ charge ordering. The pattern of atom displacements suggests the trapping of electrons within pairs of Mn sites, involving both a local double exchange and a polaronic-like distortion. The two mechanisms act together to form vibronic localized electronic states: Zener polarons. We have confirmed this picture by showing how it elucidates the unconventional paramagnetic behavior of half-doped manganites.

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  • Received 20 April 2001
  • Publisher error corrected 3 September 2002

DOI:https://doi.org/10.1103/PhysRevLett.89.097205

©2002 American Physical Society

Corrections

3 September 2002

Erratum

Publisher’s Note: Zener Polaron Ordering in Half-Doped Manganites [Phys. Rev. Lett. 89, 097205 (2002)]

A. Daoud-Aladine, J. Rodríguez-Carvajal, L. Pinsard-Gaudart, M. T. Fernández-Díaz, and A. Revcolevschi
Phys. Rev. Lett. 89, 129902 (2002)

Authors & Affiliations

A. Daoud-Aladine1, J. Rodríguez-Carvajal1,2, L. Pinsard-Gaudart1,3, M. T. Fernández-Díaz4, and A. Revcolevschi3

  • 1Laboratoire Léon Brillouin, CEA-CNRS Saclay, 91191 Gif sur Yvette, France
  • 2Service de Physique Statistique Magnétisme et Supraconductivite, CEA, 38054 Grenoble, France
  • 3Laboratoire de Physico-Chimie de l’Etat Solide, Université Paris Sud, Bâtiment 414, 91405 Orsay, France
  • 4Institut Laue-Langevin, 38042 Grenoble, France

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Issue

Vol. 89, Iss. 9 — 26 August 2002

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