Abstract
We report a high-pressure single crystal study of the topological superconductor . Resistivity measurements under pressure show superconductivity is depressed smoothly. At the same time the metallic behavior is gradually lost. The upper-critical field data under pressure collapse onto a universal curve. The absence of Pauli limiting and the comparison of to a polar-state function point to spin-triplet superconductivity, but an anisotropic spin-singlet state cannot be discarded completely.
- Received 2 September 2011
DOI:https://doi.org/10.1103/PhysRevLett.108.057001
© 2012 American Physical Society