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    題名: Electronic structure of the Fe-layer-catalyzed carbon nanotubes studied by x-ray-absorption spectroscopy
    作者: Yeh, C. L.;Jan, J. C.;Chiou, J. W.;Pong, W. F.;Tsai, M.-H.;Chang, Y. K.;Chen, Y. Y.;Lee, Y. F.;Tseng, P. K.;Wei, S. L.;Wen, C. Y.;Chen, L. C.;Chen, K. H.
    貢獻者: 淡江大學物理學系
    關鍵詞: carbon nanotubes;electronic structure;XANES;charge exchange
    日期: 2001-11
    上傳時間: 2013-05-31 11:32:51 (UTC+8)
    出版者: College Park: American Institute of Physics
    摘要: X-ray-absorption near edge structure (XANES) measurements have been performed to investigate the local electronic structures of the Fe-catalyzed and stabilized carbon nanotubes (CNT) with various diameters. The intensities of the π∗- and σ∗-band and the interlayer-state features in the C K-edge XANES spectra of these CNTs vary with the diameter of the CNT. The white-line features at the C K- and Fe L3-edges suggest a strong hybridization between the C 2p and Fe 3d orbitals, which lead to an enhancement of the C K- and reduction of the Fe L3-edge features, respectively, indicative of a charge transfer from C 2p to Fe 3d orbitals. The Fe K-edge spectra reveal a p–d rehybridization effect that reduces p-orbital occupation at the Fe site.
    關聯: Applied Physics Letters 79(19), pp.3179-3181
    DOI: 10.1063/1.1416165
    顯示於類別:[物理學系暨研究所] 期刊論文


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