Scale-invariant magnetoresistance in a cuprate superconductor

 · Invited

Abstract

The anomalous metallic state in the high-temperature superconducting cuprates is masked by superconductivity near a quantum critical point. Applying high magnetic fields to suppress superconductivity has enabled detailed studies of the normal state, yet the direct effect of strong magnetic fields on the metallic state is poorly understood. In this talk, we report the high-field magnetoresistance of thin-film La2–xSrxCuO4 cuprate in the vicinity of the critical doping, 0.161 ≤ p ≤ 0.190. We find that the metallic state exposed by suppressing superconductivity is characterized by magnetoresistance that is linear in magnetic fields up to 80 tesla. The magnitude of the linear-in-field resistivity mirrors the magnitude and doping evolution of the well-known linear-in-temperature resistivity that has been associated with quantum criticality in high-temperature superconductors.

*The high-field resistivity measurements were performed in the 60 T long-pulse and 100 T magnet systems at the NHMFL Pulsed Field Facility, which is supported by NSF grant DMR-1157490 and the U.S. Department of Energy, Basic Energy Sciences (DOE/BES) “Science at 100 T” grant. Molecular beam epitaxy synthesis, lithography, and characterization of the samples were done at Brookhaven National Laboratory, which is supported by DOE/BES, Materials Sciences and Engineering Division.

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Presenters

  • Gregory Scott Boebinger

    • National High Magnetic Field Laboratory
    • Natl High Magnetic Field Lab
    • NHMFL

Authors

  • Paula Giraldo-Gallo

    • University of the Andes
    • Departamento de Física, Universidad de Los Andes
    • NHMFL

  • Jose A Galvis

    • Universidad Central, Colombia
    • NHMFL

  • Zachary A Stegen

    • National High Magnetic Field Laboratory

  • Kimberly Modic

    • Max Planck Institute for Chemical Physics of Solids
    • Max Planck Dresden
    • Max Planck Institute
    • max planck dresden

  • Fedor Balakirev

    • Los Alamos National Laboratory
    • Los Alamos Natl Lab
    • National High Magnetic Field Laboratory, Los Alamos National Laboratory

  • Jonathan B Betts

    • Los Alamos National Laboratory
    • Los Alamos Natl Lab

  • Xiujun Lian

    • National High Magnetic Field Laboratory
    • Florida State Univ

  • Camilla Moir

    • CRIEPI

  • Jie Wu

    • Brookhaven National Laboratory

  • Anthony Travis Bollinger

    • Brookhaven National Laboratory

  • Xi He

    • Brookhaven National Laboratory

  • Ivan Bozovic

    • Brookhaven National Laboratory
    • Department of Chemistry and Energy Science Institute, Yale University; Bookhaven National Laboratory

  • Brad J Ramshaw

    • Cornell University
    • Cornell university
    • Cornell

  • Ross McDonald

    • Los Alamos National Laboratory
    • physics, los alamos national lab
    • NHMFL-PFF, Los Alamos National Laboratory
    • Los Alamos Natl. Lab
    • Los Alamos Natl Lab
    • National High Magnetic Field Laboratory, LANL

  • Gregory Scott Boebinger

    • National High Magnetic Field Laboratory
    • Natl High Magnetic Field Lab
    • NHMFL

  • Arkady Shekhter

    • National High Magnetic Field Laboratory
    • DC Facility, National High Magnetic Field Laboratory
    • Natl High Magnetic Field Lab
    • NHMFL