English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 56859/90577 (63%)
造访人次 : 12294184      在线人数 : 69
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜寻范围 查询小技巧:
  • 您可在西文检索词汇前后加上"双引号",以获取较精准的检索结果
  • 若欲以作者姓名搜寻,建议至进阶搜寻限定作者字段,可获得较完整数据
  • 进阶搜寻

    jsp.display-item.identifier=請使用永久網址來引用或連結此文件: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/111830

    题名: Structural distortion and electronic states of Rb doped WO3 by x-ray absorption spectroscopy
    作者: Y. C. Wang;C. H. Hsu;Y. Y. Hsu;C. C. Chang;C. L. Dong;T. S. Chan;K. Kumar;H. L. Liou;C. L. Chen;M. K. Wu
    日期: 2016-09
    上传时间: 2017-10-25 02:11:00 (UTC+8)
    摘要: Rubidium tungsten bronzes (RbxWO3) have recently attracted much attention due to their intriguing phenomena, such as complex structural phase transitions, strong electron–phonon coupling, and superconducting properties. This study investigates the local atomic and electronic structures of RbxWO3 (0.17 ≤ x ≤ 0.33). X-ray powder diffraction patterns showed a hexagonal tungsten bronze (HTB) phase. X-ray absorption spectra (XAS) at the W L3-edge and Rb K-edge of RbxWO3 were carried out. The XAS analysis indicated a local distorted WO6 octahedron which leads to a splitting of eg and t2g energy states in the tungsten 5d orbital and this splitting of energy levels exhibited an asymmetrical behavior at x = 0.23 and 0.27. Overall analysis revealed a distortion of local atomic structure of the WO6 octahedra by rubidium doping, leading to the modification of the electronic structures of eg and t2g states in the tungsten 5d orbital, thereby accounting for the property changes in CDW formation and superconducting transition temperature of these materials.
    關聯: RSC Advances 6, p.107871-107877
    DOI: 10.1039/C6RA21777J
    显示于类别:[物理學系暨研究所] 期刊論文


    档案 描述 大小格式浏览次数
    Structural distortion and electronic states of Rb doped WO3 by x-ray absorption spectroscopy.pdf1482KbAdobe PDF0检视/开启



    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - 回馈