English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 63184/95884 (66%)
造訪人次 : 4554196      線上人數 : 300
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜尋範圍 查詢小技巧:
  • 您可在西文檢索詞彙前後加上"雙引號",以獲取較精準的檢索結果
  • 若欲以作者姓名搜尋,建議至進階搜尋限定作者欄位,可獲得較完整資料
  • 進階搜尋
    請使用永久網址來引用或連結此文件: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/117173

    題名: Realization of intrinsically broken Dirac cones in graphene via the momentum-resolved electronic band structure
    作者: Lee, Chi-Cheng;Fukuda, Masahiro;Lee, Yung-Ting;Ozaki, Taisuke
    日期: 2018-06-28
    上傳時間: 2019-10-01 12:10:24 (UTC+8)
    摘要: A way to represent the band structure that distinguishes between energy-momentum and energy-crystal momentum relationships is proposed upon the band-unfolding concept. This momentum-resolved band structure offers better understanding of the physical processes requiring the information of wave functions in momentum space and provides a direct connection to angle-resolved photoelectron spectroscopy (ARPES) spectra. Following this approach, we demonstrate that Dirac cones in graphene are intrinsically broken in momentum space and can be described by a conceptual unit cell smaller than the primitive unit cell. This hidden degree of freedom can be measured by ARPES experiments as missing weight that is retrievable by investigating the effect of different polarized light. Having the energy-momentum relationship, we provide alternative understanding of the retrieved momentum intensity beyond the periodic-zone scheme, that is, the retrieved momentum intensity is assisted with the properties of final states, not from the Dirac cones directly. The revealed broken Dirac cones and momenta supplied by the lattice give interesting ingredients for designing advanced nanodevices.
    關聯: Journal of Physics: Condensed Matter 30(29), p.295502
    DOI: 10.1088/1361-648X/aacac2
    顯示於類別:[物理學系暨研究所] 期刊論文


    檔案 描述 大小格式瀏覽次數
    Realization of intrinsically broken Dirac cones in graphene via the momentum-resolved electronic band structure.pdf1139KbAdobe PDF2檢視/開啟



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