Superconducting properties and μSR study of the noncentrosymmetric superconductor Nb0.5Os0.5
| Autor: | D. McK. Paul, J. A. T. Barker, Deepak Singh, Adrian D. Hillier, Arumugam Thamizhavel, Ravi Pratap Singh |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Superconductivity
Materials science Specific heat Condensed matter physics Condensed Matter - Superconductivity Relaxation (NMR) 02 engineering and technology Muon spin spectroscopy 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Symmetry (physics) Magnetization Electrical resistivity and conductivity Condensed Matter::Superconductivity 0103 physical sciences Superconducting transition temperature General Materials Science 010306 general physics 0210 nano-technology QC |
| ISSN: | 0953-8984 |
| 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: | OpenAIRE |
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