Published February 1991 | Version v1
Journal article Metadata-only

The temperature energy gap evolution of Ba0.6K0.4BiO3 by electron tunneling

Creators

  • 1. Inst. de Investigaciones en Materiales, Univ. Nacional Autonoma de Mexico, Mexico City (Mexico)
  • 2. Materials Science Div., Argonne National Lab., IL (USA)

Description

We report tunneling experiments using sandwich type junctions, with superconducting bulk samples of Ba0.6K0.4BiO3 and evaporated thin film Sn counterelectrodes. The tunneling characteristics show the energy gap feature, and structure in the d2I/dV2 curves. The results demonstrate that the temperature energy gap variation follows a BCS behavior. The ratio 2Δ/kBTc is 3.75 suggesting an intermediate coupling. (orig.)

Additional details

Publishing Information

Journal Title
Physica. B, Condensed Matter
Journal Volume
169
Journal Issue
pt.3
Series
Phys., B Condens. Matter.
Journal Page Range
705-706
ISSN
0921-4526
CODEN
PHYBE

Conference

Title
19. international conference on low temperature physics (LT-19).
Dates
16-22 Aug 1990.
Place
Brighton (UK).

INIS

Country of Publication
Netherlands
Country of Input or Organization
Netherlands
INIS RN
22079200
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
BARIUM OXIDES; BCS THEORY; BISMUTH OXIDES; ELECTRODES; ENERGY GAP; ENERGY-LEVEL DENSITY; HIGH-TC SUPERCONDUCTORS; JOSEPHSON JUNCTIONS; POTASSIUM OXIDES; QUATERNARY COMPOUNDS; SUPERCONDUCTING JUNCTIONS; SUPERCONDUCTIVITY; TEMPERATURE DEPENDENCE; THIN FILMS; TIN; TRANSITION TEMPERATURE; TUNNEL EFFECT; ULTRALOW TEMPERATURE; VERY LOW TEMPERATURE
Descriptors DEC
ALKALI METAL COMPOUNDS; ALKALINE EARTH METAL COMPOUNDS; AMINES; BARIUM COMPOUNDS; BISMUTH COMPOUNDS; CHALCOGENIDES; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; ELEMENTS; FILMS; METALS; ORGANIC COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; POTASSIUM COMPOUNDS; SEMICONDUCTOR JUNCTIONS; SUPERCONDUCTORS; THERMODYNAMIC PROPERTIES