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    Spin anisotropy due to spin-orbit coupling in optimally hole-doped Ba0:67K0:33Fe2As2

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    Song, Yu; Man, Haoran; Zhang, Rui; Lu, Xingye; Zhang, Chenglin; More... Wang, Meng; Tan, Guotai; Regnault, L.-P.; Su, Yixi; Kang, Jian; Fernandes, Rafael M.; Dai, Pengcheng Less...
    Date
    2016
    Abstract
    We use polarized inelastic neutron scattering to study the temperature and energy dependence of spin space anisotropies in the optimally-hole-doped iron pnictide Ba0.67K0.33Fe2As2 (Tc=38 K). In the superconducting state, while the high-energy part of the magnetic spectrum is nearly isotropic, the low-energy part displays a pronounced anisotropy, manifested by a c-axis polarized resonance. We also observe that the spin anisotropy in superconducting Ba0.67K0.33Fe2As2 extends to higher energies compared with electron-doped BaFe2−xTMxAs2 (TM=Co, Ni) and isovalent-doped BaFe2As1.4P0.6, suggesting a connection between Tc and the energy scale of the spin anisotropy. In the normal state, the low-energy spin anisotropy for hole- and electron-doped iron pnictides near optimal superconductivity onset at temperatures similar to the temperatures at which the elastoresistance deviates from Curie–Weiss behavior, pointing to a possible connection between the two phenomena. Our results highlight the relevance of the spin-orbit coupling to the superconductivity of the iron pnictides.
    Citation
    Song, Yu, Man, Haoran, Zhang, Rui, et al.. "Spin anisotropy due to spin-orbit coupling in optimally hole-doped Ba0:67K0:33Fe2As2." Physical Review B, 94, no. 21 (2016) American Physical Society: http://dx.doi.org/10.1103/PhysRevB.94.214516.
    Published Version
    http://dx.doi.org/10.1103/PhysRevB.94.214516
    Type
    Journal article
    Publisher
    American Physical Society
    Citable link to this page
    https://hdl.handle.net/1911/94007
    Rights
    Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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    • Faculty Publications [4976]
    • Physics and Astronomy Publications [1769]

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    Home | FAQ | Contact Us | Privacy Notice | Accessibility Statement
    Managed by the Digital Scholarship Services at Fondren Library, Rice University
    Physical Address: 6100 Main Street, Houston, Texas 77005
    Mailing Address: MS-44, P.O.BOX 1892, Houston, Texas 77251-1892
    Site Map