Superconducting properties in single crystals of the topological nodal semimetal PbTaSe2
Cheng-Long Zhang, Zhujun Yuan, Guang Bian, Su-Yang Xu, Xiao Zhang, M. Zahid Hasan, Shuang Jia
DOI 10.1103/PhysRevB.93.054520 · Physical Review B
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Abstract
We report electronic properties of superconductivity in single crystals of topological nodal-line semimetal PbTaSe2. Resistivity, magnetic susceptibility, and specific heat measurements were performed on high-quality single crystals. We observed large, temperature-dependent anisotropy in its upper critical field (Hc2). The upper critical field measured for H∥ab plane shows a sudden upward feature instead of saturation at low temperatures. The specific heat measurements in magnetic fields reveal a full superconducting gap with no gapless nodes.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| PbTaSe2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 3.8 | Pressure not reported | midpoint |
| PbTaSe2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 3.7 | Pressure not reported | onset |
| PbTaSe2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 3.6 | Pressure not reported | onset |
| PbTaSe2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 3.72 | Pressure not reported | unknown |
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