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Probing the superconducting gap structure in the noncentrosymmetric topological superconductor ZrRuAs
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Das, Debarchan, Adroja, D. T., Lees, Martin R., Taylor, R. W., Bishnoi, Z. S., Anand, V. K., Bhattacharyya, A., Guguchia, Z., Baines, C., Luetkens, H., Stenning, G. B. G., Duan, Lei, Wang, Xiancheng and Jin, Changqing (2021) Probing the superconducting gap structure in the noncentrosymmetric topological superconductor ZrRuAs. Physical Review B, 103 (14). 144516. doi:10.1103/PhysRevB.103.144516 ISSN 2469-9950.
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Official URL: http://dx.doi.org/10.1103/PhysRevB.103.144516
Abstract
The superconducting gap structure of the topological superconductor candidate ZrRuAs with a noncentrosymmetric crystal structure has been investigated using muon-spin rotation/relaxation (μSR) measurements in transverse-field (TF) and zero-field (ZF) geometries. Magnetization, electrical resistivity, and heat capacity measurements reveal bulk superconductivity below a superconducting transition temperature Tc = 7.9(1) K. The temperature dependence of the effective penetration depth obtained from the TF-μSR spectra, and the electronic heat capacity in the superconducting state, are well described by an isotropic s-wave gap model. Comparison of the electronic mean free path with the superconducting coherence length suggests superconductivity in the dirty limit. ZF μSR data show there is no significant change in the muon-spin relaxation rate above and below Tc, indicating that time-reversal symmetry is preserved in the superconducting state.
Item Type: | Journal Article | ||||||||||||||||||
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Subjects: | Q Science > QC Physics | ||||||||||||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||||||||||||
Library of Congress Subject Headings (LCSH): | Superconductors -- Magnetic properties, Superconductors -- Thermal properties, Muon spin rotation | ||||||||||||||||||
Journal or Publication Title: | Physical Review B | ||||||||||||||||||
Publisher: | American Physical Society | ||||||||||||||||||
ISSN: | 2469-9950 | ||||||||||||||||||
Official Date: | 1 April 2021 | ||||||||||||||||||
Dates: |
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Volume: | 103 | ||||||||||||||||||
Number: | 14 | ||||||||||||||||||
Article Number: | 144516 | ||||||||||||||||||
DOI: | 10.1103/PhysRevB.103.144516 | ||||||||||||||||||
Status: | Peer Reviewed | ||||||||||||||||||
Publication Status: | Published | ||||||||||||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||||||||||||
Copyright Holders: | ©2021 American Physical Society | ||||||||||||||||||
Date of first compliant deposit: | 23 April 2021 | ||||||||||||||||||
Date of first compliant Open Access: | 26 April 2021 | ||||||||||||||||||
RIOXX Funder/Project Grant: |
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