G -type magnetic order in ferropnictide C ux F e1-yAs induced by hole doping on As sites

T. Zou, C. C. Lee, W. Tian, H. B. Cao, M. Zhu, B. Qian, C. R. Dela Cruz, W. Ku, Z. Q. Mao, X. Ke

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Abstract

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-Tc cuprates, in CuxFe1-yAs 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.

Original languageEnglish (US)
Article number054414
JournalPhysical Review B
Volume95
Issue number5
DOIs
StatePublished - Feb 10 2017

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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    Zou, T., Lee, C. C., Tian, W., Cao, H. B., Zhu, M., Qian, B., Dela Cruz, C. R., Ku, W., Mao, Z. Q., & Ke, X. (2017). G -type magnetic order in ferropnictide C ux F e1-yAs induced by hole doping on As sites. Physical Review B, 95(5), [054414]. https://doi.org/10.1103/PhysRevB.95.054414