English  |  正體中文  |  简体中文  |  Post-Print筆數 : 27 |  Items with full text/Total items : 113656/144643 (79%)
Visitors : 51714195      Online Users : 562
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/140.119/63548


    Title: Anomalous and spin Hall effects in hcp cobalt from GGA+U calculations
    Authors: 郭光宇
    Tung, Jen-Chuan;Fuh, Huei-Ru;Guo, Guang-Yu
    Contributors: 應物所
    Date: 2012.07
    Issue Date: 2014-01-24 12:54:11 (UTC+8)
    Abstract: We have calculated the intrinsic anomalous and spin Hall conductivities, spin and orbital magnetic moments, and also spin polarization of Hall currents in hexagonal cobalt within the density functional theory with the generalized gradient approximation (GGA) plus onsite Coulomb interaction (GGA+). The accurate all-electron full-potential linearized augmented plane-wave method is used. We find that the anomalous Hall conductivity (AHC) () and orbital magnetic moment () of cobalt with the magnetization being along the axis () calculated in the GGA+ scheme with eV and eV agree rather well with the corresponding experimental values while, in contrast, the and from the GGA calculations are significantly smaller than the measured ones. This suggests that moderate eV and eV are appropriate for Co metals. The calculated AHC and spin Hall conductivity (SHC) () are highly anisotropic, and the ratio of the Hall conductivity for to that for the magnetization being in plane () from the GGA+ calculations, is 16.0 for the AHC and 6.0 for the SHC. For , the spin-up and spin-down Hall currents are found to flow in the same direction. The magnitude of the calculated Hall current spin polarization () is large and . Remarkably, for , the spin-up and spin-down Hall currents are predicted to flow in the opposite directions. This indicates that the Hall current contains both spin-polarized charge current and pure spin current, resulting in the magnitude of the Hall current spin polarization () being larger than 1.0.
    Relation: Physical Review B, 86, 024435
    Data Type: article
    DOI 連結: http://dx.doi.org/10.1103/PhysRevB.86.024435
    DOI: 10.1103/PhysRevB.86.024435
    Appears in Collections:[應用物理研究所 ] 期刊論文

    Files in This Item:

    File Description SizeFormat
    024435.pdf443KbAdobe PDF21734View/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