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Universal stripe order as a precursor of the superconducting phase in pressurized BaFe2Se3 Spin Ladder

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  • معلومة اضافية
    • Contributors:
      Laboratoire de Physique des Solides (LPS); Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS); Matériaux, Rayonnements, Structure (NEEL - MRS); Institut Néel (NEEL); Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ); Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ); Université Grenoble Alpes (UGA); Laboratoire Léon Brillouin (LLB - UMR 12); Institut Rayonnement Matière de Saclay (DRF) (IRAMIS); Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS); Synchrotron SOLEIL (SSOLEIL); Centre National de la Recherche Scientifique (CNRS); Laboratoire de Chimie Physique - Matière et Rayonnement (LCPMR); Institut de Chimie - CNRS Chimie (INC-CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS); Laboratoire Nano-Magnétisme et Oxydes (LNO); Service de physique de l'état condensé (SPEC - UMR3680); Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut Rayonnement Matière de Saclay (DRF) (IRAMIS); ANR-20-CE30-0029,COCOM,Compétition et Couplage d'Ordres Multiples(2020)
    • بيانات النشر:
      HAL CCSD
      Nature Research
    • الموضوع:
      2022
    • Collection:
      Université Grenoble Alpes: HAL
    • نبذة مختصرة :
      International audience ; Abstract It has been recently observed that a superconducting phase emerges under pressure in the Fe-based spin-ladders BaFe 2 X 3 (X = S, Se). The low dimensionality of the Fe spin-ladders, which simplifies the elaboration of theoretical models, should help to understand the mechanism of superconductivity. We investigate here the frontier between magnetic and superconducting (SC) phases in BaFe 2 Se 3 by performing challenging powder neutron diffraction (PND) and Fe K β x-ray emission spectroscopy (XES) under high pressure. We show that the ambient pressure ground state with a block-like magnetic order is destabilized under pressure. A pressure-induced antiferromagnetic stripe-like spin order, similar to the magnetic order of the parent superconductor BaFe 2 S 3 , is observed above 3-4 GPa. Our discovery shows that the stripe magnetic order is a key phase close to the SC dome and its particular magnetic fluctuations could be involved in the stabilization of superconductivity in Fe-based spin ladders.
    • Relation:
      hal-03996600; https://hal.science/hal-03996600; https://hal.science/hal-03996600/document; https://hal.science/hal-03996600/file/s42005-022-00955-7.pdf
    • الرقم المعرف:
      10.1038/s42005-022-00955-7
    • Rights:
      info:eu-repo/semantics/OpenAccess
    • الرقم المعرف:
      edsbas.7DB8601A