Superconducting Properties and $\mu$SR Study of the Noncentrosymmetric Superconductor Nb$_{0.5}$Os$_{0.5}$

Autor:	Singh, D., Barker, J. A. T., Thamizhavel, A., Hillier, A. D., Paul, D. McK., Singh, R. P.
Rok vydání:	2017
Předmět:	Condensed Matter - Superconductivity
Druh dokumentu:	Working Paper
DOI:	10.1088/1361-648X/aaa376
Popis:	The properties of the noncentrosymmetric superconductor ($\alpha$-$\textit{Mn}$ structure) Nb$_{0.5}$Os$_{0.5}$ is investigated using resistivity, magnetization, specific heat, and muon spin relaxation and rotation ($\mu$SR) measurements. These measurements suggest that Nb$_{0.5}$Os$_{0.5}$ is a weakly coupled ($\lambda_{e-ph}$ $\sim$ 0.53) type-II superconductor ($\kappa_{GL}$ $\approx$ 61) having a bulk superconducting transition temperature $T_c$ = 3.07 K. The specific heat data in the superconductive regime fits well with the single-gap BCS model indicating nodeless s-wave superconductivity in Nb$_{0.5}$Os$_{0.5}$. The $\mu$SR measurements also confirm $\textit{s}$-wave superconductivity with the preserved time-reversal symmetry. Comment: 7 Page, 8 Figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1705.00129 Zobrazit plný text záznamu View this record from Arxiv