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

研究成果: Article査読

26 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)1194-1197
ページ数4
ジャーナルjournal of the physical society of japan
70
5
DOI
出版ステータスPublished - 2001 5 1
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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