Bonding anisotropy in multiferroic TbMnO(3) probed by polarization dependent x-ray absorption spectroscopy

doi:10.1063/1.3064126

標題:	Bonding anisotropy in multiferroic TbMnO(3) probed by polarization dependent x-ray absorption spectroscopy
作者:	Chen, J. M. Lee, J. M. Chen, C. K. Chou, T. L. Lu, K. T. Haw, S. C. Liang, K. S. Chen, C. T. Jeng, H. T. Huang, S. W. Yang, T. J. Shen, C. C. Liu, R. S. Lin, J. Y. Hu, Z. 電子物理學系物理研究所 Department of Electrophysics Institute of Physics
公開日期:	26-Jan-2009
摘要:	O K- and Mn L(2,3)-edges x-ray absorption spectra of orthorhombic TbMnO(3) single crystals show strong polarization dependence, in contrast with results of previous experiments on orthorhombic LaMnO(3) and DyMnO(3) thin films that show nearly isotropic spectral structure. First-principles calculations reveal that TbMnO(3) exhibits a zigzag e(g) orbital ordering ground state. The highly distorted MnO(6) octahedron and orbital ordering in TbMnO(3) produce highly anisotropic Mn-O bonding within the ab plane, a frustration of the magnetic ordering, and the formation of complicated incommensurate magnetic structures.
URI:	http://dx.doi.org/10.1063/1.3064126 http://hdl.handle.net/11536/7725
ISSN:	0003-6951
DOI:	10.1063/1.3064126
期刊:	APPLIED PHYSICS LETTERS
Volume:	94
Issue:	4
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Appears in Collections:	Articles