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    題名: Anisotropic electronic structure in quasi-one-dimensional K0.3MoO3: An angle-dependent x-ray absorption study
    作者: Tsai, H. M.;Asokan, Asokan;Pao, C. W.;Chiou, Jau-Wern;Du, C. H.;Pong, Way-Faung;Tsai, M. H.;Jang, Ling-Yun
    貢獻者: 淡江大學物理學系
    關鍵詞: potassium compounds;XANES;electronic density of states
    日期: 2007-07-09
    上傳時間: 2009-12-31 10:42:43 (UTC+8)
    出版者: College Park: American Institute of Physics
    摘要: 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.
    關聯: Applied Physics Letters 91(2), 022109(3pages)
    DOI: 10.1063/1.2756358
    顯示於類別:[物理學系暨研究所] 期刊論文

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