Superconducting properties and μSR study of the noncentrosymmetric superconductor Nb0.5Os0.5. (22nd January 2018)

• Record Type: Journal Article
• Authors: Singh, D; Barker, J A T; Thamizhavel, A; Hillier, A D; Paul, D McK; Singh, R P
• Is Part Of: Journal of physics. Volume 30:Number 7(2018)
• Publication Date: 2018-01-22
• Subjects: noncentrosymmetric superconductors -- μSR -- unconventional superconductors; Condensed matter -- Periodicals; Matière condensée -- Périodiques; Vaste stoffen; Vloeistoffen; Natuurkunde; Electronic journals; Computer network resources; 530.4105
• DOI: 10.1088/1361-648X/aaa376
• Languages: English
• ISSNs: 0953-8984

Abstract

Abstract: The properties of the noncentrosymmetric superconductor ( α - M n structure) Nb0.5 Os0.5 have been investigated using resistivity, magnetization, specific heat, and muon spin relaxation and rotation ( μ SR) measurements. These measurements suggest that Nb0.5 Os0.5 is a weakly coupled ( λ e − p h ∼ 0.53 ) type-II superconductor ( κ G L ≈ 61 ), having a bulk superconducting transition temperature T c = 3.07 K. The specific heat data fits well with the single-gap BCS model indicating nodeless s-wave superconductivity in Nb0.5 Os0.5 . The μ SR measurements also confirm s -wave superconductivity with the preserved time-reversal symmetry.