Orbital ordering in La0.5Sr1.5MnO4 studied by soft x-ray linear dichroism -: art. no. 087202

被引：83

作者：

Huang, DJ ^{[1
]}

Wu, WB

Guo, GY

Lin, HJ

Hou, TY

Chang, CF

Chen, CT

Fujimori, A

Kimura, T

Huang, HB

Tanaka, A

Jo, T

机构：

[1] Natl Synchrotron Radiat Res Ctr, Hsinchu 30077, Taiwan

[2] Natl Chiao Tung Univ, Inst Electrophys, Hsinchu 300, Taiwan

[3] Natl Taiwan Univ, Dept Phys, Taipei 106, Taiwan

[4] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan

[5] Univ Tokyo, Dept Complex Sci & Engn, Tokyo 1130033, Japan

[6] Univ Tokyo, Dept Appl Phys, Tokyo 1138656, Japan

[7] Hiroshima Univ, Dept Quantum Matters, ADSM, Higashihiroshima 7398530, Japan

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.92.087202

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We found that the conventional model of orbital-ordering of 3x(2)-r(2)/3y(2)-r(2) type in the e(g) states of La0.5Sr1.5MnO4 is incompatible with measurements of linear dichroism in the Mn 2p-edge x-ray absorption, whereas these e(g) states exhibit predominantly cross-type orbital ordering of x(2)-z(2)/y(2)-z(2). LDA+U band-structure calculations reveal that such a cross-type orbital-ordering results from a combined effect of antiferromagnetic structure, Jahn-Teller distortion, and on-site Coulomb interactions.

引用

页数：4

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