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Time-reversal symmetry breaking in the noncentrosymmetric superconductor Re6Ti

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Singh, D., K. P., Sajilesh, Barker, Joel, Paul, Don McK., Hillier, A. D. and Singh, R. P. (2018) Time-reversal symmetry breaking in the noncentrosymmetric superconductor Re6Ti. Physical Review B, 97 (10). 100505(R). doi:10.1103/PhysRevB.97.100505

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Official URL: http://dx.doi.org/10.1103/PhysRevB.97.100505

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Abstract

We have investigated the superconducting state of the noncentrosymmetric superconductor Re6Ti (Tc = 6.0K) using a muon-spin rotation/relaxation technique. The zero-field muon experiment shows the presence of spontaneous magnetic fields in the superconducting state, indicating time-reversal symmetry breaking (TRSB). However, the low-temperature transverse-field muon measurements suggest nodeless s-wave superconductivity. Similar results were also observed for Re6X (X = Zr, Hf) family of materials which indicates that the pairing symmetry does not depend on the spin-orbital coupling. Altogether, these studies suggest an unconventional nature (TRSB) of superconductivity is intrinsic to the Re6X family of compounds and paves the way for further studies of this family of materials.

Item Type: Journal Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Science > Physics
Library of Congress Subject Headings (LCSH): Superconductors, Superconductivity, Broken symmetry (Physics), Muon spin rotation
Journal or Publication Title: Physical Review B
Publisher: American Physical Society
ISSN: 2469-9950
Official Date: 12 March 2018
Dates:
DateEvent
12 March 2018Published
12 March 2018Accepted
6 January 2018Submitted
Volume: 97
Number: 10
Article Number: 100505(R)
DOI: 10.1103/PhysRevB.97.100505
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
Young Scientist Grant (YSS/2015/001799)Science and Engineering Research Boardhttp://dx.doi.org/10.13039/501100001843
Ramanujan Fellowship (SR/S2/RJN-83/2012)Science and Engineering Research Boardhttp://dx.doi.org/10.13039/501100001843
Conference Paper Type: Paper

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