Increase of the critical current by an external electric field in high-temperature superconductors
L. Burlachkov, I. B. Khalfin, B. Ya. Shapiro
DOI 10.1103/PhysRevB.48.1156 · Physical Review B
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Abstract
An electric field directed perpendicular to the surface of a superconductor changes the superconducting properties near the surface and creates an additional barrier for flux penetration into the sample. This effect is characterized by the value lD/ξ, where lD is the Debye screening length and ξ is the coherence length, and can be neglected in conventional superconductors with lD≪ξ. However, in high-temperature superconductors, where lD/ξ∼1, the effect is very pronounced and could be used for improvement of the transport critical current.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7 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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