Direct probing of the spatial distribution of the maximum Josephson current in a superconducting tunnel junction

Journal Article · Mon Apr 01 04:00:00 EST 1985 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.54.1448· OSTI ID:5838408

Bosch, J; Gross, R; Koyanagi, M; Huebener, R P

We report the first experimental results obtained by low-temperature scanning-electron microscopy on the spatial distribution of maximum Josephson current in tunnel junctions. The experiments were performed with a nearly one-dimensional PbIn-PbBi window junction, its length being large compared to lambda/sub J/. The spatial resolution is 1--2 ..mu..m and is governed by the thermal healing length. In a parallel magnetic field the different vortex states have clearly been observed. The nonlocal effects due to the beam-induced change of the phase-difference function predicted by Chang et al. have also been confirmed.

• Research Organization: Physikalisches Institut II, Universitat Tuebingen, D-7400 Tuebingen, Federal Republic of Germany
• OSTI ID: 5838408
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 54:13; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
420201 -- Engineering-- Cryogenic Equipment & Devices
656102 -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BISMUTH COMPOUNDS
DATA
DIMENSIONS
DISTRIBUTION
ELECTRON MICROSCOPY
EXPERIMENTAL DATA
INDIUM COMPOUNDS
INFORMATION
JOSEPHSON JUNCTIONS
JUNCTIONS
LEAD COMPOUNDS
LENGTH
MAGNETIC FIELDS
MAGNETIC FLUX
MICROSCOPY
NUMERICAL DATA
SCANNING ELECTRON MICROSCOPY
SPATIAL DISTRIBUTION
SUPERCONDUCTING JUNCTIONS
TUNNEL EFFECT