標題: Strong orbital polarization in orthorhombic DyMnO3: A combined x-ray linear dichroism and ab initio electronic structure study
作者: Chen, J. M.
Hu, Z.
Jeng, H. T.
Chin, Y. Y.
Lee, J. M.
Huang, S. W.
Lu, K. T.
Chen, C. K.
Haw, S. C.
Chou, T. L.
Lin, H. -J.
Shen, C. C.
Liu, R. S.
Tanaka, A.
Tjeng, L. H.
Chen, C. T.
電子物理學系
Department of Electrophysics
公開日期: 15-May-2010
摘要: We present a combined experimental and theoretical study on the Mn 3d orbital occupation in orthorhombic DyMnO3 single crystals. We have observed a very strong polarization dependence in the Mn L-2,L-3 x-ray absorption spectra, indicative for a distinct anisotropic orbital occupation. Ab initio electronic-structure calculations clearly infer the existence of a strong orbital polarization in the e(g) band with a staggered d(3x2-r2)/d(3y2-r2)-type ordering pattern in the ab plane. This finding is in excellent agreement with a quantitative analyis of the spectra using the atomic multiplet cluster approach.
URI: http://dx.doi.org/10.1103/PhysRevB.81.201102
http://hdl.handle.net/11536/149957
ISSN: 1098-0121
DOI: 10.1103/PhysRevB.81.201102
期刊: PHYSICAL REVIEW B
Volume: 81
Issue: 20
起始頁: 0
結束頁: 0
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