Destroying superconductivity in thin films with an electric field
Andrea Amoretti, Daniel K. Brattan, Nicodemo Magnoli, Luca Martinoia, Ioannis Matthaiakakis, Paolo Solinas
DOI 10.1103/PhysRevResearch.4.033211 · Physical Review Research
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Abstract
In this paper, we use a Ginzburg-Landau approach to show that a suitably strong electric field can drive a phase transition from a superconductor to a normal metal. The transition is induced by taking into account corrections to the permittivity due to the superconductive gap and persists even when screening effects are considered. We test the model against recent experimental observations in which a strong electric field has been observed to control the supercurrent in superconducting thin films. We find excellent agreement with the experimental data and are able to explain several observed features. We additionally suggest a way to test our theoretical proposal via superconductor-superconductor electron tunneling.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| BCS Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.41 | Pressure not reported | unknown |
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