Field-induced transitions from superconductors to Bose metal in La1.875Ba0.125CuO4

ORAL

Abstract

What happens to the pairing correlations in a cuprate superconductor when superconducting order is suppressed with a magnetic field? We have studied this problem in LBCO x=1/8, where 2D superconductivity appears below 40 K, but 3D order only occurs below 5 K, presumably due to pair-density-wave order intertwined with the spin- and charge-stripe orders. At T = 0.35 K, a c-axis magnetic field initially induces finite dissipation near 10 T, followed by re-entrant 2D superconductivity between 18 and 22 T [1]. The resistance per CuO2 plane rises to h/(4e2) near 31 T, but then saturates at 2h/(4e2) at higher fields. The saturation of the resistance indicates metallic behavior, but the fact that the Hall coefficient is ~ 0 indicates a lack of quasiparticles. We conclude that conduction is by incoherent hopping of pairs between charge stripes, indicating that stripes are good for pairing, but not phase coherence.
[1] Y. Li et al., arXiv:1810.10646.

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Presenters

  • John Tranquada

    Brookhaven National Laboratory, CMPMS, Brookhaven National Laboratory, Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Condensed Matter Physics & Materials Science, Brookhaven National Laboratory, Brookhaven Natl Lab

Authors

  • John Tranquada

    Brookhaven National Laboratory, CMPMS, Brookhaven National Laboratory, Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Condensed Matter Physics & Materials Science, Brookhaven National Laboratory, Brookhaven Natl Lab

  • Yangmu Li

    Brookhaven National Laboratory, CMPMS, Brookhaven National Laboratory, Condensed Matter Physics & Materials Science, Brookhaven National Laboratory

  • Genda Gu

    Brookhaven National Laboratory, Brookhaven National Lab, Department of Condensed Matter Physics and Materials Science, Brookhaven, Brookhaven National Laboratory, Upton, New York 11973-5000, USA., Cond. Matt. Physics and Material Science, Brookhaven Natl Lab, Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Condensed Matter Physics & Materials Science Department, Brookhaven National Laboratory, Brookhaven National Labs, Long Island, NY, USA, 11973, Condensed Matter Physics & Materials Science, Brookhaven National Laboratory, Condensed Matter Physics, Brookhaven National Laboratory, Brookhaven National Laboratories, Chinese Academy of Sciences, Condensed Matter Physics & Materials Science, Brookhaven National Lab, Brookhaven Natl Lab

  • Qiang Li

    Brookhaven National Laboratory, Condensed Matter Physics & Materials Science, Brookhaven National Laboratory

  • Alexei Tsvelik

    Brookhaven National Laboratory, CMPMSD, Brookhaven National Laboratory

  • Jasminka Terzic

    National High Magnetic Field Laboratory, National High Magnetic Field Lab, Department of Physics and National High Magnetic Field Lab, Florida State University

  • Paul G. Baity

    Dept. of Phys. & Natl. High Magnetic Field Lab., Florida State Univ., National High Magnetic Field Lab, Department of Physics and National High Magnetic Field Lab, Florida State University, Dept. of Phys. Natl. High Magnetic Field Lab.

  • Dragana Popovic

    Dept. of Phys. & Natl. High Magnetic Field Lab., Florida State Univ., National High Magnetic Field Lab, Department of Physics and National High Magnetic Field Lab, Florida State University, Dept. of Phys. Natl. High Magnetic Field Lab.