Superconductivity in the doped topological insulator Cu{x}Bi{2}Se{3} under high pressure |
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Authors: | Bay T V Naka T Huang Y K Luigjes H Golden M S de Visser A |
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Affiliation: | Van der Waals-Zeeman Institute, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands. |
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Abstract: | We report a high-pressure single crystal study of the topological superconductor Cu{x}Bi{2}Se{3}. Resistivity measurements under pressure show superconductivity is depressed smoothly. At the same time the metallic behavior is gradually lost. The upper-critical field data B{c2}(T) under pressure collapse onto a universal curve. The absence of Pauli limiting and the comparison of B{c2}(T) to a polar-state function point to spin-triplet superconductivity, but an anisotropic spin-singlet state cannot be discarded completely. |
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