English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 55542/89862 (62%)
造訪人次 : 11010282      線上人數 : 32
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: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/92509

    題名: First-Principles Method of Propagation of Tightly Bound Excitons: Verifying the Exciton Band Structure of LiF with Inelastic x-Ray Scattering
    作者: Lee, Chi-Cheng;Chen, Xiaoqian M.;Gan, Yu;Yeh, Chen-Lin;Hsueh, Hung-Chung;Peter Abbamomte;Ku, ei
    貢獻者: 淡江大學物理學系
    關鍵詞: First principles;Propagation of Exciton;Inelastic X-ray Scattering
    日期: 2013-10-08
    上傳時間: 2013-10-16 17:31:45 (UTC+8)
    出版者: College Park: American Physical Society
    摘要: We propose a simple first-principles method to describe the propagation of tightly bound excitons. By viewing the exciton as a composite object (an effective Frenkel exciton in Wannier orbitals), we define an exciton kinetic kernel to encapsulate the exciton propagation and decay for all binding energies. Applied to prototypical LiF, our approach produces three exciton bands, which we verified quantitatively via inelastic x-ray scattering. The proposed real-space picture is computationally inexpensive and thus enables study of the full exciton dynamics, even in the presence of surfaces and impurity scattering. It also provides an intuitive understanding to facilitate practical exciton engineering in semiconductors, strongly correlated oxides, and their nanostructures.
    關聯: Physical Review Letter 111(15), 157401(5pages)
    DOI: 10.1103/PhysRevLett.111.157401
    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
    PhysRevLett.111.157401.pdf925KbAdobe PDF206檢視/開啟



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