Published March 15, 1992
| Version v1
Journal article
Reproducible tunneling characteristics and zero-bias anomalies in Y-Ba-Cu-O tunnel junctions
Creators
- 1. Dipt. di Fisica, Univ. di Salerno, Baronissi (Italy)
- 2. MASPEC-Consiglio Nazionale delle Ricerche, Parma (Italy)
Description
We have investigated interfaces between chemically etched YBa2Cu3O7-δ single crystals and evaporated thin films of different materials by means of planar tunnel junctions with natural barriers. We have found that reproducible tunneling characteristics are obtained with Au, Bi and Sb counterelectrodes. Evidence for the local Tc of the Y-Ba-Cu-O compound is observed in these junctions. Less pronounced structures are found in the case of Sn counterelectrodes while Ag and Al junctions develop a large resistance peak at zero bias and low temperatures. (orig.)
Additional details
Publishing Information
- Journal Title
- Physica. C, Superconductivity
- Journal Volume
- 192
- Journal Issue
- 3/4
- Series
- Phys., C Supercond.
- Journal Page Range
- 279-283
- ISSN
- 0921-4534
- CODEN
- PHYCE
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- Netherlands
- INIS RN
- 23070572
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- BARIUM OXIDES; COPPER OXIDES; ELECTRIC CONDUCTIVITY; ETCHING; FILMS; HIGH-TC SUPERCONDUCTORS; INTERFACES; JOSEPHSON JUNCTIONS; MONOCRYSTALS; QUATERNARY COMPOUNDS; SUPERCONDUCTING FILMS; THIN FILMS; TUNNEL EFFECT; YTTRIUM OXIDES
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; AMINES; BARIUM COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; CRYSTALS; ELECTRICAL PROPERTIES; ORGANIC COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SEMICONDUCTOR JUNCTIONS; SUPERCONDUCTORS; TRANSITION ELEMENT COMPOUNDS; YTTRIUM COMPOUNDS