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Multigap superconductivity in chiral noncentrosymmetric TaRh2B2
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Mayoh, Daniel, Hillier, A. D., Gotze, Kathrin, Paul, Don McK., Balakrishnan, Geetha and Lees, Martin R. (2018) Multigap superconductivity in chiral noncentrosymmetric TaRh2B2. Physical Review B (Condensed Matter and Materials Physics), 98 (1). 014502. doi:10.1103/PhysRevB.98.014502
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Official URL: http://dx.doi.org/10.1103/PhysRevB.98.014502
Abstract
We report the observation of multigap superconductivity in TaRh2B2. We show TaRh2 B2 is a bulk type-II superconductor with a transition temperature Tc = 6.00(5) K. We present transverse-field muon spin relaxation data where the superconducting gap can be fit using a two-gap (s + s)-wave model.We also report the zero-field electronic specific heat in the superconducting state that is best described by the same (s + s) model, providing further evidence of multiband behavior in this superconductor. Zero-field muon spin relaxation measurements show time-reversal symmetry is preserved in the superconducting state. We demonstrate that TaRh2B2 has an upper critical field of 15.2(1) T, which is significantly higher than previously reported and exceeds the Pauli limit.
| Item Type: | Journal Article | ||||||||||
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| Subjects: | Q Science > QC Physics | ||||||||||
| Divisions: | Faculty of Science > Physics | ||||||||||
| Library of Congress Subject Headings (LCSH): | Superconductors, Superconductors, Type II, Muon spin rotation, Superconductivity | ||||||||||
| Journal or Publication Title: | Physical Review B (Condensed Matter and Materials Physics) | ||||||||||
| Publisher: | American Physical Society | ||||||||||
| ISSN: | 1098-0121 | ||||||||||
| Official Date: | 5 July 2018 | ||||||||||
| Dates: |
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| Volume: | 98 | ||||||||||
| Number: | 1 | ||||||||||
| Page Range: | 014502 | ||||||||||
| DOI: | 10.1103/PhysRevB.98.014502 | ||||||||||
| Status: | Peer Reviewed | ||||||||||
| Publication Status: | Published | ||||||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||||||
| Copyright Holders: | American Physical Society | ||||||||||
| RIOXX Funder/Project Grant: |
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