MEM charge density analysis of orbital-ordering of Nd0.35Sr 0.65MnO3

Kenichi Kato, Masaki Takata, Eiji Nishibori, Makoto Sakata, Noriaki Hamada, Yutaka Moritomo

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The charge density distribution of Nd0.35Sr 0.65MnO3 has been investigated by means of the maximum entropy method (MEM) using the synchrotron radiation (SR) X-ray powder diffraction data. In this compound, the anisotropic optical spectra reported by Tobe et al. [Phys. Rev. B 67 (2003) 140402(R)] suggest that the d 3z2-r2 orbital-ordering survives even at 600K (≫ TN = 260 K). Consistently, we observed an anisotropic charge density distribution around the Mn ion at 30K (≪ TN), indicating the long-range ordering of the d3z2-r2 orbital. At 300K (≥ TN), however, the charge density distribution becomes isotropic, suggesting the disappearance of the long-range orbital ordering.

Original languageEnglish
Pages (from-to)2137-2140
Number of pages4
Journaljournal of the physical society of japan
Volume74
Issue number8
DOIs
Publication statusPublished - 2005 Aug

Keywords

  • MEM charge density analysis
  • Orbital ordering
  • SR x-ray powder diffraction

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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