English  |  正體中文  |  简体中文  |  Post-Print筆數 : 27 |  Items with full text/Total items : 109952/140891 (78%)
Visitors : 46259162      Online Users : 1080
RC Version 6.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
    •  Adv. Search
    Home ‧ Login ‧ Upload ‧ Help ‧ About ‧ Administer Goto mobile version


    Please use this identifier to cite or link to this item: https://nccur.lib.nccu.edu.tw/handle/140.119/109767


    Title: 薄膜與二維系統之電子結構與拓樸態
    Authors: 楊志開
    Contributors: 應物所
    Keywords: 石墨烯;石墨烷;氫缺位團簇;電子結構;磁性
    Graphene;graphane;hydrogen vacancy clusters;electronic structures;magnetism
    Date: 2016
    Issue Date: 2017-05-18 09:51:12 (UTC+8)
    Abstract: 由於不完全氫化，氫化石墨烯(石墨烷)的氫缺位會改變石墨烷的電子結構，從而調制其電、磁及光學性質。我們有系統的以第一原理電子結構計算研究石墨烷中的氫缺位團簇，這些分隔的團簇包括三角形、平行四邊形、六邊形、及長方形等各種幾何形狀。結果發現氫缺位會在純石墨烷的大能隙中產生新能階;所有三角形氫缺位團簇均具有磁性，且面積越大磁矩越高;三角形及平行四邊形氫缺位能階均自旋極化，且可應用於光躍遷;平行四邊形及開口型長方形氫缺位團簇為反磁性，可應用於奈米級數位訊息登錄。
    Hydrogen vacancies in graphane are products of incomplete hydrogenation of graphene. The missing H atoms can alter the electronic structure of graphane and therefore tune the electronic, magnetic, and
    optical properties of the composite. We systematically studied a variety of well separated clusters of hydrogen vacancies in graphane, including the geometrical shapes of triangles, parallelograms, hexagons, and rectangles, by first-principles density functional calculation. The results indicate that energy levels caused by the missing H are generated in the broad band gap of pure graphane. All
    triangular clusters of H vacancies are magnetic, the larger the triangle the higher the magnetic moment. The defect levels introduced by the missing H in triangular and parallelogram clusters are spin-polarized and can find application in optical transition. Parallelograms and openended rectangles
    are antiferromagnetic and can be used for nanoscale registration of digital information.
    Relation: MOST 104-2112-M-004-003
    Data Type: report
    Appears in Collections:[應用物理研究所 ] 國科會研究計畫

    Files in This Item:

    File Description SizeFormat
    104-2112-M-004-003.pdf2922KbAdobe PDF2400View/Open


    All items in 政大典藏 are protected by copyright, with all rights reserved.


    社群 sharing

    著作權政策宣告 Copyright Announcement
    1.本網站之數位內容為國立政治大學所收錄之機構典藏，無償提供學術研究與公眾教育等公益性使用，惟仍請適度，合理使用本網站之內容，以尊重著作權人之權益。商業上之利用，則請先取得著作權人之授權。
    The digital content of this website is part of National Chengchi University Institutional Repository. It provides free access to academic research and public education for non-commercial use. Please utilize it in a proper and reasonable manner and respect the rights of copyright owners. For commercial use, please obtain authorization from the copyright owner in advance.

    2.本網站之製作，已盡力防止侵害著作權人之權益，如仍發現本網站之數位內容有侵害著作權人權益情事者，請權利人通知本網站維護人員(nccur@nccu.edu.tw)，維護人員將立即採取移除該數位著作等補救措施。
    NCCU Institutional Repository is made to protect the interests of copyright owners. If you believe that any material on the website infringes copyright, please contact our staff(nccur@nccu.edu.tw). We will remove the work from the repository and investigate your claim.
    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback