High-pressure structural analysis of (Nd, Sm)1/2Sr1/2MnO3: Origin for pressure-induced charge ordering

A. Kuriki, Y. Moritomo, A. Machida, E. Nishibori, M. Takata, M. Sakata, Y. Ohishi, O. Shimomura, A. Nakamura

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Pressure effects on the structural parameters are investigated in a half-doped manganites (Nd0.125Sm0.875)1/2Sr1/2 MnO3, by means of the synchrotron-radiation x-ray powder diffraction measurement. The compound shows a pressure-induced metal-insulator transition due to the subtle competition between the double-exchange interaction and the charge-ordering instability [Y. Tokura et al., Phys. Rev. Lett. 76, 3184 (1996)]. We have found that application of pressure induces the four-long and two-short deformation of the MnO6 octahedra. We present a possible scenario for the pressure-induced charge-ordering.

Original languageEnglish
Article number113105
Pages (from-to)1131051-1131054
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume65
Issue number11
Publication statusPublished - 2002 Mar 15
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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