Quantum fluctuations in current-carrying thin films of YBa2Cu3O7-δ
Creators
- 1. Brockhouse Institute for Materials Research, McMaster University, Hamilton, Ontario, L8S 4M1 (CANADA)
Description
Light ion irradiation is used to gain insight into nonlinear transport in the absence of an applied magnetic field. Detailed measurements of the electric-field endash current-density characteristics of YBa2Cu3O7-δ microbridges are found to agree well with a model based on the quantum nucleation of vortices. Light ion irradiation drastically shifts the characteristics to lower currents. Within the model, the current scale associated with the onset of dissipation can be related to the superconducting carrier density. We compare the reduction in the superconducting carrier density deduced from the model with direct measurements employing infrared reflectance spectroscopy and find excellent agreement. copyright 1997 The American Physical Society
Additional details
Publishing Information
- Journal Title
- Physical Review. B, Condensed Matter
- Journal Volume
- 55
- Journal Issue
- 22
- Journal Page Range
- p. R14741-R14744.
- ISSN
- 0163-1829
- CODEN
- PRBMDO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 28072562
- Subject category
- S36: MATERIALS SCIENCE; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- BARIUM COMPOUNDS; BARIUM OXIDES; CARRIER DENSITY; COPPER OXIDES; CURRENT DENSITY; ELECTRIC CONDUCTIVITY; ELECTRIC FIELDS; HIGH-TC SUPERCONDUCTORS; INFRARED SPECTRA; REFLECTIVITY; THIN FILMS; VORTICES; YTTRIUM COMPOUNDS; YTTRIUM OXIDES
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; ELECTRICAL PROPERTIES; FILMS; OPTICAL PROPERTIES; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SPECTRA; SUPERCONDUCTORS; SURFACE PROPERTIES; TRANSITION ELEMENT COMPOUNDS