Published October 1, 1992 | Version v1
Journal article Metadata-only

HC1 and BCS energy gap from low field ultrasonic measurements on melt-textured YBa2Cu3O7

Creators

  • 1. Department of Physics, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin 53201 (United States)
  • 2. Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)

Description

Ultrasonic attenuation and velocity measurements have been performed on melt-textured YBa2Cu3O7. In low magnetic field sweeps at constant temperatures, one sees sharp changes in both the velocity and the attenuation at the lower critical field. The attenuation jump per vortex can be fit to a Debye relaxation formula and the temperature dependence of the relaxation time in the superconducting state can be determined. The final results appear to be consistent with BCS energy gap Δ(0)=1.76 kBTC

Additional details

Publishing Information

Journal Title
AIP Conference Proceedings
Journal Volume
286
Journal Issue
1
Journal Page Range
p. 141-146.
ISSN
0094-243X
CODEN
APCPCS

Conference

Title
prospect and retrospect in condensed matter physics.
Acronym
Indo-U.S. workshop on ordering disorder
Dates
29 Dec 1992 - 5 Jan 1993.
Place
Hyderabad (India).

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
25039334
Subject category
S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Conference
Descriptors DEI
BARIUM OXIDES; BCS THEORY; COPPER OXIDES; CRITICAL FIELD; ENERGY GAP; HIGH-TC SUPERCONDUCTORS; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0000-0013 K; TEMPERATURE RANGE 0013-0065 K; TEMPERATURE RANGE 0065-0273 K; TEXTURE; ULTRASONIC WAVES; YTTRIUM OXIDES
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; MAGNETIC FIELDS; OXIDES; OXYGEN COMPOUNDS; SOUND WAVES; SUPERCONDUCTORS; TEMPERATURE RANGE; TRANSITION ELEMENT COMPOUNDS; YTTRIUM COMPOUNDS

Optional Information

Secondary number(s)
CONF-921278--.