Singh, R.P., Hillier, A.D., Mazidian, B., Quintanilla, J., Annett, J.F., Paul, D. McK., Balakrishnan, G., Lees, M.R. (2014) Detection of Time-Reversal Symmetry Breaking in the Noncentrosymmetric Superconductor Re\(_6\)Zr Using Muon-Spin Spectroscopy. Physical Review Letters, 112 (10). ISSN 0031-9007. E-ISSN 1079-7114. (doi:10.1103/PhysRevLett.112.107002) (KAR id:37803)
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| Official URL: http://dx.doi.org/10.1103/PhysRevLett.112.107002 |
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Abstract
We have investigated the superconducting state of the non-centrosymmetric compound Re\(_6\)Zr using magnetization, heat capacity, and muon-spin relaxation/rotation (\(\mu\)SR) measurements. Re\(_6\)Zr has a superconducting transition temperature, T\(_c\) = 6.75±0.05 K. Transverse-field \(\mu\)SR experiments, used to probe the superfluid density, suggest an \(s\)-wave character for the superconducting gap. However, zero and longitudinal-field \(\mu\)SR data reveal the presence of spontaneous static magnetic fields below \(T\)\(_c\) indicating that time-reversal symmetry is broken in the superconducting state and an unconventional pairing mechanism. An analysis of the pairing symmetries identifies the ground states compatible with time-reversal symmetry breaking.
| Item Type: | Article |
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| DOI/Identification number: | 10.1103/PhysRevLett.112.107002 |
| Uncontrolled keywords: | Physics of Quantum Materials, superconductivity, noncentrosymmetric, group theory, symmetry analysis, unconventional pairing, specific heat, muon, muon spin rotation, muon spin relaxation, time-reversal symmetry, triplet pairing |
| Subjects: | Q Science > QC Physics |
| Institutional Unit: | Schools > School of Engineering, Mathematics and Physics > Physics and Astronomy |
| Former Institutional Unit: |
Divisions > Division of Natural Sciences > Physics and Astronomy
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| Depositing User: | Jorge Quintanilla |
| Date Deposited: | 15 Jan 2014 10:40 UTC |
| Last Modified: | 20 May 2025 09:35 UTC |
| Resource URI: | https://kar.kent.ac.uk/id/eprint/37803 (The current URI for this page, for reference purposes) |
University of Kent Author Information
Quintanilla, J..
| Creator's ORCID: |
 https://orcid.org/0000-0002-8572-730X
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