Study of chiral d-wave superconductor candidate URu2Si2 by using scanning SQUID microscopy

ORAL

Abstract

The heavy electron superconductor URu2Si2 has been extensively studied since the transitions of its hidden order and superconducting state were reported by the specific heat measurement in 1985[1]. Recent studies of thermal conductivity[2] and optical Kerr measurement[3] on URu2Si2 have shown evidence of chiral d-wave superconductivity. The chiral d-wave order superconductivity has also been suggested by a theoretical calculation of the magnetic excitation spectrum[4]. A chiral superconductor is expected to show chiral edge current modes analogous to a topological insulator. In order to search for evidence of chiral superconductivity in URu2Si2, we will report a study of the local superconducting and local charge current states of URu2Si2 single crystals using a scanning SQUID microscope.
[1] T.T.M. Palstra et al., Phys. Rev. Lett. 55, 2727(1985).
[2] Y. Kasahara et al., Phys. Rev. Lett. 99, 116402(2007).
[3] E.R. Schemm et al., Phys. Rev. B 91, 140506(2015).
[4] H. Kusunose, J. Phys. Soc. Jpn. 81, 023704(2012).

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Presenters

  • Yusuke Iguchi

    Department of Applied Physics, Stanford University, Stanford, California 94305, USA, Stanford University

Authors

  • Yusuke Iguchi

    Department of Applied Physics, Stanford University, Stanford, California 94305, USA, Stanford University

  • Irene Zhang

    Department of Applied Physics, Stanford University, Stanford, California 94305, USA, Stanford University

  • Eric Bauer

    Los Alamos National Laboratory, Los Alamos, NM 87545, USA, Los Alamos National Laboratory, MPA-CMMS, Los Alamos National Laboratory, Los Alamos, USA, MPA-CMMS, Los Alamos National Laboratory, Los Alamos National Laboratory, Los Alamos, New Mexico, USA, Los Alamos National Labs

  • Filip Ronning

    Los Alamos National Laboratory, Los Alamos, NM 87545, USA, Los Alamos National Laboratory, MPA-CMMS, Los Alamos National Laboratory, Los Alamos, USA, MPA-CMMS, Los Alamos National Laboratory, Los Alamos National Laboratory, Los Alamos, New Mexico, USA, Los Alamos National Labs

  • Kathryn Ann Moler

    Department of Applied Physics, Stanford University, Stanford, California 94305, USA, Stanford University, Physics and Applied Physics, Stanford University