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Commensurate antiferromagnetic excitations as a signature of the pseudogap in the tetragonal high-Tc cuprate HgBa2CuO4+δ

Author

Listed:
  • M. K. Chan

    (School of Physics and Astronomy, University of Minnesota
    Pulsed Field Facility, National High Magnetic Field Laboratory, Los Alamos National Laboratory)

  • C. J. Dorow

    (School of Physics and Astronomy, University of Minnesota
    Present address: Department of Physics, University of California, San Diego, 9500 Gilman Drive La Jolla, California 92093, USA ;)

  • L. Mangin-Thro

    (Laboratoire Léon Brillouin, LLB/IRAMIS, UMR12, CEA-CNRS, CEA-Saclay)

  • Y. Tang

    (School of Physics and Astronomy, University of Minnesota)

  • Y. Ge

    (School of Physics and Astronomy, University of Minnesota
    Present address: Department of Physics, Penn State University, University Park, Pennsylvania 16802, USA ;)

  • M. J. Veit

    (School of Physics and Astronomy, University of Minnesota
    Present address: Department of Applied Physics, Stanford University, Stanford, California 94305, USA ;)

  • G. Yu

    (School of Physics and Astronomy, University of Minnesota)

  • X. Zhao

    (School of Physics and Astronomy, University of Minnesota
    State Key Lab of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University)

  • A. D. Christianson

    (Oak Ridge National Laboratory)

  • J. T. Park

    (Forschungsneutronenquelle Heinz Maier-Leibnitz)

  • Y. Sidis

    (Laboratoire Léon Brillouin, LLB/IRAMIS, UMR12, CEA-CNRS, CEA-Saclay)

  • P. Steffens

    (Institute Laue Langevin)

  • D. L. Abernathy

    (Oak Ridge National Laboratory)

  • P. Bourges

    (Laboratoire Léon Brillouin, LLB/IRAMIS, UMR12, CEA-CNRS, CEA-Saclay)

  • M. Greven

    (School of Physics and Astronomy, University of Minnesota)

Abstract

Antiferromagnetic correlations have been argued to be the cause of the d-wave superconductivity and the pseudogap phenomena exhibited by the cuprates. Although the antiferromagnetic response in the pseudogap state has been reported for a number of compounds, there exists no information for structurally simple HgBa2CuO4+δ. Here we report neutron-scattering results for HgBa2CuO4+δ (superconducting transition temperature Tc≈71 K, pseudogap temperature T*≈305 K) that demonstrate the absence of the two most prominent features of the magnetic excitation spectrum of the cuprates: the X-shaped ‘hourglass’ response and the resonance mode in the superconducting state. Instead, the response is Y-shaped, gapped and significantly enhanced below T*, and hence a prominent signature of the pseudogap state.

Suggested Citation

  • M. K. Chan & C. J. Dorow & L. Mangin-Thro & Y. Tang & Y. Ge & M. J. Veit & G. Yu & X. Zhao & A. D. Christianson & J. T. Park & Y. Sidis & P. Steffens & D. L. Abernathy & P. Bourges & M. Greven, 2016. "Commensurate antiferromagnetic excitations as a signature of the pseudogap in the tetragonal high-Tc cuprate HgBa2CuO4+δ," Nature Communications, Nature, vol. 7(1), pages 1-7, April.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms10819
    DOI: 10.1038/ncomms10819
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