Orbital and charge ordering in La1-cursive greek chiSr1+cursive greek chiMnO4 (0.4 ≤ cursive greek chi ≤ 0.5)

Yusuke Wakabayashi, Youichi Murakami, Yutaka Moritomo, Ichiro Koyama, Hironori Nakao, Takashi Kiyama, Tsuyoshi Kimura, Yoshinori Tokura, Nobuyoshi Wakabayashi

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

Hole concentration dependence of charge order (CO) and orbital order (OO) in layered perovskite compounds La1-cursive Greek chiSr1+cursive Greek chiMnO4 has been studied by means of the resonant X-ray scattering technique. Both CO and OO are observed below 210K in the compounds having the hole concentration cursive Greek chi between 0.5 and 0.48, but neither is observed for cursive Greek chi ≤ 0.46. The transition temperatures are nearly independent of cursive Greek chi between 0.5 and 0.48. Correlation lengths ξ's for both orders obtained from analyses of superlattice peak profiles are finite at any temperature. Moreover, in contrast to the cubic perovskite, ξ for OO is larger than that for CO, ξ for OO is as short as that for CO at the critical concentration of cursive Greek chi = 0.48. These results suggest that OO is prerequisite to the forming of CO in this system.

Original languageEnglish
Pages (from-to)1194-1197
Number of pages4
Journaljournal of the physical society of japan
Volume70
Issue number5
DOIs
Publication statusPublished - 2001 May 1
Externally publishedYes

Keywords

  • Charge order
  • Layered structure
  • Orbital order
  • Resonant x-ray scattering

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Wakabayashi, Y., Murakami, Y., Moritomo, Y., Koyama, I., Nakao, H., Kiyama, T., Kimura, T., Tokura, Y., & Wakabayashi, N. (2001). Orbital and charge ordering in La1-cursive greek chiSr1+cursive greek chiMnO4 (0.4 ≤ cursive greek chi ≤ 0.5). journal of the physical society of japan, 70(5), 1194-1197. https://doi.org/10.1143/JPSJ.70.1194