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Comprehensive study of the spin-charge interplay in antiferromagnetic La2−xSrxCuO4

Author

Listed:
  • Gil Drachuck

    (Technion—Israel Institute of Technology)

  • Elia Razzoli

    (Swiss Light Source, Paul Scherrer Institute
    Departement de Physique and Fribourg Center for Nanomaterials, University de Fribourg)

  • Galina Bazalitski

    (Technion—Israel Institute of Technology)

  • Amit Kanigel

    (Technion—Israel Institute of Technology)

  • Christof Niedermayer

    (Laboratory for Neutron Scattering, Paul Scherrer Institute)

  • Ming Shi

    (Swiss Light Source, Paul Scherrer Institute)

  • Amit Keren

    (Technion—Israel Institute of Technology)

Abstract

The origin of the pseudogap and its relationship with superconductivity in the cuprates remains vague. In particular, the interplay between the pseudogap and magnetism is mysterious. Here we investigate the newly discovered nodal gap in hole-doped cuprates using a combination of three experimental techniques applied to one, custom made, single crystal. The crystal is an antiferromagnetic La2−xSrxCuO4 with x=1.92%. We perform angle-resolved photoemission spectroscopy measurements as a function of temperature and find: quasi-particle peaks, Fermi surface, anti-nodal gap and below 45 K a nodal gap. Muon spin rotation measurements ensure that the sample is indeed antiferromagnetic and that the doping is close, but below, the spin-glass phase boundary. We also perform elastic neutron scattering measurements and determine the thermal evolution of the commensurate and incommensurate magnetic order, where we find that a nodal gap opens well below the commensurate ordering at 140 K, and close to the incommensurate spin density wave ordering temperature of 30 K.

Suggested Citation

  • Gil Drachuck & Elia Razzoli & Galina Bazalitski & Amit Kanigel & Christof Niedermayer & Ming Shi & Amit Keren, 2014. "Comprehensive study of the spin-charge interplay in antiferromagnetic La2−xSrxCuO4," Nature Communications, Nature, vol. 5(1), pages 1-6, May.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms4390
    DOI: 10.1038/ncomms4390
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