Increase of the critical current by an external electric field in high-temperature superconductors

Journal Article · Thu Jul 01 00:00:00 EDT 1993 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.48.1156· OSTI ID:5654246

Burlachkov, L; Khalfin, I B; Shapiro, B Y ^[1]

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1. Department of Physics, Bar-Ilan University, Ramat-Gan 52900 (Israel)

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 [ital l][sub [ital D]]/[xi], where [ital l][sub [ital D]] is the Debye screening length and [xi] is the coherence length, and can be neglected in conventional superconductors with [ital l][sub [ital D]][much lt][xi]. However, in high-temperature superconductors, where [ital l][sub [ital D]]/[xi][similar to]1, the effect is very pronounced and could be used for improvement of the transport critical current.

• OSTI ID: 5654246
• Journal Information: Physical Review, B: Condensed Matter; (United States), Vol. 48:2; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
HIGH-TC SUPERCONDUCTORS
SURFACE PROPERTIES
ABRIKOSOV THEORY
COHERENCE LENGTH
CRITICAL CURRENT
DEBYE LENGTH
TYPE-II SUPERCONDUCTORS
CURRENTS
DIMENSIONS
ELECTRIC CURRENTS
LENGTH
SUPERCONDUCTORS
360207* - Ceramics
Cermets
& Refractories- Superconducting Properties- (1992-)