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    题名: G-type magnetic order in ferropnictide CuxFe1-yAs induced by hole doping on As sites
    作者: Zou, T.;Lee, C. C.;Cao, W. Tian: H. B.;Zhu, M.;Qian, B.;Cruz, C. R. dela;Ku, W.;Mao, Z. Q.;Ke, X.
    日期: 2017-02-10
    上传时间: 2019-10-03 12:10:39 (UTC+8)
    出版者: APS
    摘要: Strong antiferromagnetic (AFM) correlation has long been postulated to be closely related to the occurrence of unconventional high-temperature superconductivity observed in the cuprates, heavy fermions, and organic superconductors. The recently discovered Fe-based superconductors add another interesting member to the list. However, insufficient attention has been paid to the versatile nature of the magnetic correlation in these materials: some showing stripe (C-type) order, others double stripe (E-type) or block AFM order instead, implying potentially richer structures of the superconducting order. Here we report the observation of yet another AFM correlation in the family: a G-type AFM order as seen in the high-T c cuprates, in C u x F e 1 − y As compounds isostructural to the LiFeAs superconductor. This study not only sheds light on the underlying mechanism of the rich magnetic correlations in the Fe-based superconductors, but also suggests the possibility of realizing a distinct pairing symmetry upon chemical doping or applying pressure.
    關聯: PHYSICAL REVIEW B 95, 054414
    DOI: 10.1103/PhysRevB.95.054414
    显示于类别:[物理學系暨研究所] 期刊論文


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