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Title: Superconducting fluctuation effects in amorphous-bismuth thin films in the presence of a perpendicular magnetic field

Abstract

The resistive transition of amorphous-Bi thin films ranging from 100 to 2900 A thick was measured in perpendicular magnetic fields to 6000 G. The results were compared with a form of the Aslamazov-Larkin theory modified to account for the presence of a magnetic field. Results were in agreement with theory for Hperpendicular < or approx. = 1000 G; at higher fields the effects of superconducting fluctuations were overshadowed by flux-flow resistance. From the measurements, the Ginzburg-Landau coherence-length constant was determined to be eta = (72 +- 5) a. No evidence was seen for a contribution from the Maki-Thompson fluctuation mechanism.

Authors:
Publication Date:
Research Org.:
University of Maryland, College Park, Maryland 20742
OSTI Identifier:
6465650
Resource Type:
Journal Article
Journal Name:
Phys. Rev., B; (United States)
Additional Journal Information:
Journal Volume: 19:1
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BISMUTH; SUPERCONDUCTIVITY; FLUCTUATIONS; GINZBURG-LANDAU THEORY; MAGNETIC FIELDS; ORDER-DISORDER TRANSFORMATIONS; SUPERCONDUCTING FILMS; TYPE-II SUPERCONDUCTORS; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; ELEMENTS; FILMS; METALS; PHASE TRANSFORMATIONS; PHYSICAL PROPERTIES; SUPERCONDUCTORS; VARIATIONS; 360104* - Metals & Alloys- Physical Properties; 656100 - Condensed Matter Physics- Superconductivity

Citation Formats

Silverman, P J. Superconducting fluctuation effects in amorphous-bismuth thin films in the presence of a perpendicular magnetic field. United States: N. p., 1979. Web. doi:10.1103/PhysRevB.19.233.
Silverman, P J. Superconducting fluctuation effects in amorphous-bismuth thin films in the presence of a perpendicular magnetic field. United States. https://doi.org/10.1103/PhysRevB.19.233
Silverman, P J. Mon . "Superconducting fluctuation effects in amorphous-bismuth thin films in the presence of a perpendicular magnetic field". United States. https://doi.org/10.1103/PhysRevB.19.233.
@article{osti_6465650,
title = {Superconducting fluctuation effects in amorphous-bismuth thin films in the presence of a perpendicular magnetic field},
author = {Silverman, P J},
abstractNote = {The resistive transition of amorphous-Bi thin films ranging from 100 to 2900 A thick was measured in perpendicular magnetic fields to 6000 G. The results were compared with a form of the Aslamazov-Larkin theory modified to account for the presence of a magnetic field. Results were in agreement with theory for Hperpendicular < or approx. = 1000 G; at higher fields the effects of superconducting fluctuations were overshadowed by flux-flow resistance. From the measurements, the Ginzburg-Landau coherence-length constant was determined to be eta = (72 +- 5) a. No evidence was seen for a contribution from the Maki-Thompson fluctuation mechanism.},
doi = {10.1103/PhysRevB.19.233},
url = {https://www.osti.gov/biblio/6465650}, journal = {Phys. Rev., B; (United States)},
number = ,
volume = 19:1,
place = {United States},
year = {1979},
month = {1}
}