Voltage locking and other interactions in coupled superconducting weak links. II. Experiment

Journal Article · Mon Dec 31 23:00:00 EST 1979 · Phys. Rev., B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.21.125· OSTI ID:5646116

Jillie, D W; Nerenberg, M A.H.; Blackburn, J A

Experiments have been performed on two superconducting indium microbridges fabricated in close proximity (approx. =2 ..mu..m) to one another. The observed interactions include the following: (i) the apparent critical current of one bridge depends upon the current and voltage across the other bridge; (ii) gross modifications of the current-voltage characteristics of one bridge occur which are dependent on the current and voltage across the neighboring bridge; and (iii) strong voltage pulling is observed whenever the two bridge voltages are approximately equal, resulting in dc voltage locking under appropriate conditions. The ''voltage-locking'' interaction is of particular interest, and data are presented showing its observed temperature and frequency dependence. It is shown that the observed interactions are in qualitative agreement with a model based upon the diffusion of quasiparticles generated during the phase-slip process.

• Research Organization: Sperry Research Center, Sudbury, Massachusetts 01776
• OSTI ID: 5646116
• Journal Information: Phys. Rev., B: Condens. Matter; (United States), Journal Name: Phys. Rev., B: Condens. Matter; (United States) Vol. 21:1; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

420201* -- Engineering-- Cryogenic Equipment & Devices
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CRITICAL CURRENT
CURRENTS
ELECTRIC CONDUCTIVITY
ELECTRIC CURRENTS
ELECTRICAL PROPERTIES
ELEMENTS
FREQUENCY DEPENDENCE
INDIUM
METALS
PHYSICAL PROPERTIES
PROXIMITY EFFECT
SUPERCONDUCTING JUNCTIONS
TEMPERATURE DEPENDENCE
TUNNEL EFFECT