Nernst effect and thermopower in an infinite-layer nickelate superconductor

ORAL

Abstract

The diffusion of superconducting vortices generates a Josephson electric field that can be probed in transport experiments (vortex Nernst effect). Famously, large vortex Nernst signals have been recorded in the high-Tc cuprate superconductors at temperatures well above the loss of the Meissner effect (flux expulsion) [1]. The discovery of superconductivity in the infinite-layer nickelates, (A,Sr)NiO2 (A=La, Pr, Nd) [2], has drawn many comparisons to the cuprates. We discuss careful measurements of the vortex Nernst effect and thermopower in the precursor regime of superconducting Nd1-xSrxNiO2 thin films.

1. Y. Wang, L. Li, and N.P. Ong, Phys. Rev. B 73, 024510 (2006).

2. D. Li, et al., Nature 572, 624 (2019)

*This research was supported by the Gordon and Betty Moore Foundation's EPiQS initiative through grant GBMF4539.

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Presenters

  • Nicholas P Quirk

    • Princeton University

Authors

  • Nicholas P Quirk

    • Princeton University

  • Bai Yang Wang

    • Stanford University
    • Stanford University, SLAC National Accelerator Laboratory

  • Kyuho Lee

    • Stanford University
    • Stanford University, SLAC National Accelerator Laboratory

  • Danfeng Li

    • Stanford University
    • City University of Hong Kong

  • Harold Hwang

    • Stanford Univ
    • Stanford University

  • N. Phuan Ong

    • Princeton University