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Phys. Rev. B 90, 104504 (2014) - Probing the superconducting ground state of the noncentrosymmetric superconductors $\mathrm{Ca}T{\mathrm{Si}}_{3}$ ($T$ = Ir, Pt) using muon-spin relaxation and rotation

Probing the superconducting ground state of the noncentrosymmetric superconductors CaTSi3 (T = Ir, Pt) using muon-spin relaxation and rotation

R. P. Singh, A. D. Hillier, D. Chowdhury, J. A. T. Barker, D. McK. Paul, M. R. Lees, and G. Balakrishnan
Phys. Rev. B 90, 104504 – Published 9 September 2014
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  • INTRODUCTION
  • EXPERIMENTAL DETAILS
  • RESULTS AND DISCUSSION
  • SUMMARY
    • References

    Abstract

    The superconducting properties of CaTSi3 (where T = Pt and Ir) have been investigated using muon spectroscopy. Our muon-spin-relaxation results suggest that in both these superconductors time-reversal symmetry is preserved, while muon-spin-rotation data show that the temperature dependence of the superfluid density is consistent with an isotropic s-wave gap. The magnetic penetration depths determined from our transverse-field muon-spin-rotation spectra are found to be 448(6) and 150(7) nm for CaPtSi3 and CaIrSi3, respectively.

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    • Received 7 May 2014
    • Revised 5 August 2014

    DOI:https://doi.org/10.1103/PhysRevB.90.104504

    ©2014 American Physical Society

    Authors & Affiliations

    R. P. Singh1, A. D. Hillier2, D. Chowdhury2, J. A. T. Barker1, D. McK. Paul1, M. R. Lees1, and G. Balakrishnan1

    • 1Department of Physics, University of Warwick, Coventry, England CV7 7AL, United Kingdom
    • 2ISIS, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Harwell Science and Innovation Campus, Oxfordshire, England OX11 0QX, United Kingdom

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    Vol. 90, Iss. 10 — 1 September 2014

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