Abstract
We report a high-pressure single-crystal study of the noncentrosymmetric superconductor YPtBi ( K). Magnetotransport measurements show a weak metallic behavior with a carrier concentration cm. Resistivity measurements up to GPa reveal superconductivity is promoted by pressure. The reduced upper critical field curves collapse onto a single curve, with values that exceed the model values for spin-singlet superconductivity. The data point to an odd-parity component in the superconducting order parameter, in accordance with predictions for noncentrosymmetric superconductors.
- Received 7 June 2012
DOI:https://doi.org/10.1103/PhysRevB.86.064515
©2012 American Physical Society