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29 March 2024
 
  » arxiv » 1704.5195

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Cooperative response of static spin-stripe order and superconductivity to non-magnetic impurities in cuprates
Z. Guguchia ; B. Roessli ; R. Khasanov ; A. Amato ; E. Pomjakushina ; K. Conder ; Y.J. Uemura ; J.M. Tranquada ; H. Keller ; A. Shengelaya ;
Date 18 Apr 2017
AbstractCuprate high-temperature superconductors (HTSs) have complex phase diagrams with multiple competing ordered phases. Understanding to which degree charge, spin, and superconducting orders compete or coexist is paramount for elucidating the microscopic pairing mechanism in the cuprate HTSs. Here, we report muon-spin rotation and neutron-scattering experiments on non-magnetic Zn impurity effects on the static spin-stripe order and superconductivity of the La214 cuprates. Remarkably, it was found that in these systems the spin-stripe ordering temperature T_so decreases linearly with Zn doping y and disappears at y = 3-4 %, demonstrating the extreme sensitivity of static spin-stripe order to impurities within a CuO_2 plane. Moreover, T_so is suppressed in the same manner as the superconducting transition temperature T_c by Zn impurities. These results suggest that the stripe and SC orders may have a common physical mechanism and are intertwined.
Source arXiv, 1704.5195
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