Competition between intrinsic and extrinsic effects in the quenching of the superconducting state in Fe(Se,Te) thin films
Antonio Leo, Pasquale Marra, Gaia Grimaldi, Roberta Citro, Shrikant Kawale, Emilio Bellingeri, Carlo Ferdeghini, Sandro Pace, Angela Nigro
DOI 10.1103/PhysRevB.93.054503 · Physical Review B
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Abstract
We report the first experimental observation of the quenching of the superconducting state in current-voltage characteristics of an iron-based superconductor, namely, in Fe(Se,Te) thin films. Based on available theoretical models, our analysis suggests the presence of an intrinsic flux-flow electronic instability along with non-negligible extrinsic thermal effects. The coexistence and competition of these two mechanisms classify the observed instability as halfway between those of low-temperature and of high-temperature superconductors, where thermal effects are, respectively, largely negligible or predominant.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Fe(Se,Te) Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 20.5 | Pressure not reported | midpoint |
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