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    Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/91609

    Title: Crystal-Field and Strain Effects on Minimum-Spin-Splitting Surfaces in Bulk Wurtzite Materials
    Authors: Wu, Chieh-Lung;Tsay, Shiow-Fon;Wang, Wan-Tsang;Gau, Ming-Hong;Chiang, Jih-Chen;Lo, Ikai;Kao, Hsiu-Fen;Hsu, Yu-Chi;Jang, Der-Jun;Lee, Meng-En;Chen, Chun-Nan
    Contributors: 淡江大學物理學系
    Keywords: Rashba effect;spin splitting;wurtzite;LCAO
    Date: 2010-09
    Issue Date: 2013-07-17 14:52:48 (UTC+8)
    Publisher: Tokyo: Institute of Pure and Applied Physics
    Abstract: The spin-splitting energies in strained bulk wurtzite aluminum nitride (AlN) are studied using the linear combination of atomic orbital method. It is found that strain and crystal field induce not only a linear-k (αwz) but also two cubic-k terms (γ' and λ') in the two-band k \cdot p Hamiltonian HSO(k) = (αwz-γ'k\|2 + λ'kz2)(σxky-σykx) + HSO0, where HSO0 = (-γ0k\|2 + λ0kz2) (σxky-σykx) is for ideal wurtzite and generates a cone-shaped minimum-spin-splitting (MSS) surface. As biaxial strain increases, the shape of the MSS surface changes from a hexagonal hyperboloid of two sheets in unstrained AlN to a hexagonal cone, and eventually becomes a hyperboloid of one sheet.
    Relation: Journal of the Physical Society of Japan 79(9), 093705(4pages)
    DOI: 10.1143/JPSJ.79.093705
    Appears in Collections:[物理學系暨研究所] 期刊論文

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