Minimum critical length for superconductivity in one-dimensional wires

Journal Article · Mon Aug 01 00:00:00 EDT 1994 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.50.3487· OSTI ID:7171396

Chi, C C; Santhanam, P; Wind, S J; Brady, M J; Bucchignano, J J ^[1]

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1. IBM Research Division, Thomas J. Watson Research Center, P.O. Box 218, Yorktown Heights, New York 10598 (United States)

We have experimentally studied the superconducting behavior of one-dimensional aluminum wires of various lengths. Each wire had much wider two-dimensional contact pads on both sides. At a temperature [ital T] below [ital T][sub [ital c]], when the wide pads are driven normal by a perpendicular magnetic field, only samples longer than a critical length, [ital L][sub [ital c]][congruent][pi][xi]([ital T]), show evidence for superconductivity. This is a direct confirmation of the prediction by Liniger for a normal-metal--superconductor--normal-metal structure with clean interfaces.

• OSTI ID: 7171396
• Journal Information: Physical Review, B: Condensed Matter; (United States), Vol. 50:5; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALUMINIUM
SUPERCONDUCTING WIRES
CRITICAL SIZE
AMBIENT TEMPERATURE
ELECTRIC CONDUCTIVITY
MAGNETIC FIELDS
TEMPERATURE RANGE 0000-0013 K
ELECTRICAL PROPERTIES
ELEMENTS
METALS
PHYSICAL PROPERTIES
SIZE
TEMPERATURE RANGE
WIRES
665411* - Basic Superconductivity Studies- (1992-)