標題: Orbital ordering in La0.5Sr1.5MnO4 studied by soft x-ray linear dichroism
作者: Huang, DJ
Wu, WB
Guo, GY
Lin, HJ
Hou, TY
Chang, CF
Chen, CT
Fujimori, A
Kimura, T
Huang, HB
Tanaka, A
Jo, T
電子物理學系
Department of Electrophysics
公開日期: 27-Feb-2004
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.
URI: http://dx.doi.org/10.1103/PhysRevLett.92.087202
http://hdl.handle.net/11536/27015
ISSN: 0031-9007
DOI: 10.1103/PhysRevLett.92.087202
期刊: PHYSICAL REVIEW LETTERS
Volume: 92
Issue: 8
起始頁: 0
結束頁: 0
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