Dominant s-wave superconducting gap in PdTe2 observed by tunneling spectroscopy on side junctions
J. A. Voerman, J. C. de Boer, T. Hashimoto, Yingkai Huang, Chuan Li, A. Brinkman
DOI 10.1103/PhysRevB.99.014510 · Physical Review B
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Abstract
We have fabricated superconductor-normal metal side junctions with different barrier transparencies out of PdTe2 crystalline flakes and measured the differential conductance spectra. Modeling our measurements using a modified Blonder, Tinkham, and Klapwijk (BTK) formalism confirms that the superconductivity is mostly comprised of the conventional s-wave symmetry. We have found that for junctions with very low barrier transparencies, the junctions can enter a thermal regime, where the critical current becomes important. Adding this to the BTK model allows us to accurately fit the experimental data, from which we conclude that the superconductivity in the a−b plane of PdTe2 is dominated by conventional s-wave pairing.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| PdTe2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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