Interaction between phase-slip centers in superconducting indium microbridges

Journal Article · Wed Feb 01 00:00:00 EST 1989 · J. Low Temp. Phys.; (United States)

DOI:https://doi.org/10.1007/BF00683373· OSTI ID:5890415

Kober, F; Clauss, W; Huebener, R P

The authors have studied the electric behavior of phase-slip centers in superconducting indium microbridges of 0.9 /mu/m thickness, 3-4/mu/m width, and 70-130 /mu/m length. Their measurements were performed in the temperature range 3-10 mK below the critical temperature T/sub c/ resulting in relatively large values (about 10-20 /mu/m) of the quasiparticle diffusion length. The temperature dependent Ginzburg-Landau coherence length /omicron/(T) has been determined for all samples from the measured temperature dependence of the critical current density. The fabrication of two notches in the indium bridge has been found to localize reliably the nucleation site of the first two phase-slip centers. Their measurements quantitatively confirmed the dc interaction predicted by the model of Kadin, Smith, and Skocpol. In addition, for temperatures very close to T/sub c/, an ac interaction has been observed which disappears abruptly for decreasing temperature. No voltage coupling has been detected.

• Research Organization: Universitaet Tuebingen (Germany, F.R.)
• OSTI ID: 5890415
• Journal Information: J. Low Temp. Phys.; (United States), Vol. 74:3-4
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ELECTRIC BRIDGES
SLIP
INDIUM
SUPERCONDUCTING FILMS
ALTERNATING CURRENT
COHERENCE LENGTH
CRITICAL CURRENT
CURRENT DENSITY
DIFFUSION LENGTH
DIRECT CURRENT
EQUIVALENT CIRCUITS
GINZBURG-LANDAU THEORY
MATHEMATICAL MODELS
NOTCHES
NUCLEATION
TEMPERATURE DEPENDENCE
TRANSITION TEMPERATURE
ULTRALOW TEMPERATURE
CURRENTS
DIMENSIONS
ELECTRIC CURRENTS
ELECTRICAL EQUIPMENT
ELECTRONIC CIRCUITS
ELEMENTS
EQUIPMENT
FILMS
LENGTH
METALS
PHYSICAL PROPERTIES
THERMODYNAMIC PROPERTIES
360104* - Metals & Alloys- Physical Properties
360102 - Metals & Alloys- Structure & Phase Studies
420201 - Engineering- Cryogenic Equipment & Devices
656100 - Condensed Matter Physics- Superconductivity