Anisotropic electronic structure in quasi-one-dimensional K0.3MoO3: An angle-dependent x-ray absorption study

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Title:	Anisotropic electronic structure in quasi-one-dimensional K0.3MoO3: An angle-dependent x-ray absorption study
Authors:	Tsai, H. M.;Asokan, Asokan;Pao, C. W.;Chiou, Jau-Wern;Du, C. H.;Pong, Way-Faung;Tsai, M. H.;Jang, Ling-Yun
Contributors:	淡江大學物理學系
Keywords:	potassium compounds;XANES;electronic density of states
Date:	2007-07-09
Issue Date:	2009-12-31 10:42:43 (UTC+8)
Publisher:	College Park: American Institute of Physics
Abstract:	The electronic structure of quasi-one-dimensional (quasi-1D) blue bronze, K0.3MoO3, was investigated by angle-dependent x-ray absorption near-edge structure (XANES) spectroscopy at O and K K and Mo L3 edges along the quasi-1D MoO6 octahedron-chain direction, i.e., the b axis, and the octahedron-in-plane direction, i.e., the d axis, well below its Peierls phase transition temperature (180 K). The O K-edge XANES spectra indicate that the angle dependence of O 2p–Mo 4d hybridization, especially those with the π* character, is more significant along the b axis than along the d axis. Similar trend is also observed in the Mo L3-edge XANES spectra. The K K-edge XANES spectra reveal anisotropic effect of hybridization of K 4p states with O 2p states on the MoO6 octahedron.
Relation:	Applied Physics Letters 91(2), 022109(3pages)
DOI:	10.1063/1.2756358
Appears in Collections:	[Graduate Institute & Department of Physics] Journal Article

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