MEM Charge Density Analysis of Orbital-Ordering of Nd_0.35Sr_0.65MnO₃

• Kato Kenichi

  JASRI/SPring-8 CREST, JST

• Takata Masaki

  JASRI/SPring-8 CREST, JST

• Nishibori Eiji

  Department of Applied Physics, Nagoya University

• Sakata Makoto

  Department of Applied Physics, Nagoya University

• Hamada Noriaki

  Faculty of Science and Technology, Science University of Tokyo

• Moritomo Yutaka

  JASRI/SPring-8 CREST, JST Department of Applied Physics, Nagoya University

書誌事項

タイトル別名

• MEM Charge Density Analysis of Orbital-Ordering of Nd0.35Sr0.65MnO3

抄録

The charge density distribution of Nd_0.35Sr_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 600 K (>>T_N=260 K). Consistently, we observed an anisotropic charge density distribution around the Mn ion at 30 K (<<T_N), indicating the long-range ordering of the d_3z²−r² orbital. At 300 K (≥T_N), however, the charge density distribution becomes isotropic, suggesting the disappearance of the long-range orbital ordering.

収録刊行物

• Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ

  Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ 74 (8), 2137-2140, 2005

  一般社団法人 日本物理学会

キーワード

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

詳細情報

• CRID: 1390001204187737856
• NII論文ID: 210000105564
• NII論文ID: 110001979675
• NII論文ID: 130004539376
• NII書誌ID: AA00704814
• DOI: 10.1143/jpsj.74.2137
• BIBCODE: 2005JPSJ...74.2137K
• ISSN: 13474073
• ISSN: 00319015
• NDL書誌ID: 7393739
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7393739
• Web Site: https://journals.jps.jp/doi/pdf/10.1143/JPSJ.74.2137
• 本文言語コード: en
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