Nodeless s-wave superconductivity in the α-Mn structure type noncentrosymmetric superconductor TaOs: a μSR study. (10th October 2019)

• Record Type: Journal Article
• Authors: Singh, D; Sajilesh, K P; Marik, Sourav; Biswas, P K; Hillier, A D; Singh, R P
• Is Part Of: Journal of physics. Volume 32:Number 1(2020)
• Publication Date: 2019-10-10
• Subjects: noncentrosymmetric superconductor -- unconventional superconductors -- noncentrosymmetric compounds; Condensed matter -- Periodicals; Matière condensée -- Périodiques; Vaste stoffen; Vloeistoffen; Natuurkunde; Electronic journals; Computer network resources; 530.4105
• DOI: 10.1088/1361-648X/ab43a4
• Languages: English
• ISSNs: 0953-8984

Abstract

Abstract: Noncentrosymmetric superconductors can lead to a variety of exotic properties in the superconducting state such as line nodes, multigap behavior, and time-reversal symmetry breaking. In this paper, we report the properties of a new noncentrosymmetric superconductor TaOs, using muon spin relaxation and rotation measurements. It is shown using the zero-field muon experiment that TaOs preserve the time-reversal symmetry in the superconducting state. From the transverse field muon measurements, we extract the temperature dependence of, which is proportional to the superfluid density. This data can be fit with a fully gapped s-wave model for = 2.01 0.02. Furthermore, the value of magnetic penetration depth is found to be 5919 45, which is consistent with the value obtained from the bulk measurements.