Resistance anomaly near the superconducting transition temperature in short aluminum wires

Journal Article · Mon Apr 29 00:00:00 EDT 1991 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.66.2254· OSTI ID:5694694

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

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1. IBM Research Division, Thomas J. Watson Research Center, Yorktown Heights, New York 10598 (US)

We report a systematic experimental study of the superconducting resistive transition in one-dimensional Al wires of length 0.6 to 110 {mu}m. Shorter wires show a peak in resistance as a function of temperature near {ital T}{sub {ital c}}, with a value {ital above} the normal-state resistance. Near the peak, the resistance {ital decreases} sharply in a magnetic field of only a few Oe. In the same regime, the current-voltage characteristic resembles that of a superconductor-insulator-normal tunnel junction. These new results may be a manifestation of coherent effects in small superconducting samples.

• OSTI ID: 5694694
• Journal Information: Physical Review Letters; (USA), Vol. 66:17; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM
ELECTRIC CONDUCTIVITY
EXPERIMENTAL DATA
MAGNETIC FIELDS
SUPERCONDUCTIVITY
TRANSITION TEMPERATURE
ULTRALOW TEMPERATURE
WIRES
DATA
ELECTRICAL PROPERTIES
ELEMENTS
INFORMATION
METALS
NUMERICAL DATA
PHYSICAL PROPERTIES
THERMODYNAMIC PROPERTIES
360104* - Metals & Alloys- Physical Properties