Published April 1993 | Version v1
Journal article Metadata-only

Composition dependence of transition temperature in some ceramic superconductors

Creators

  • 1. Barkatullah Univ., Bhopal (India). School of Physics
  • 2. Jiwaji Univ., Gwalior (India). School of Studies in Physics

Description

The composition dependence of transition temperature in some ceramic superconductors (Lasub(2-x)(Ba,Sr)xCuO4) was studied by modifying our earlier approach and developing a Fourier-transformed effective potential which involves the effect of two-dimensional (2D) acoustic plasmons. This potential was used to obtain the pairing (electron-electron attraction) parameter (λ), the averaged Coulomb repulsive parameter (μ*) and the cut-off 2D acoustic plasmon frequency (ωc) required to compute the superconducting transition temperature (Tc) from the strong coupling theory. The variations of Tc with composition (x) obtained for Lasub(2-x)(Ba,Sr)xCuO4 show reasonably good agreement with experimental data. (author). 24 refs., 5 figs

Additional details

Publishing Information

Journal Title
Bulletin of Materials Science
Journal Volume
16
Journal Issue
2
Journal Page Range
p. 117-126.
ISSN
0250-4707
CODEN
BUMSDW

INIS

Country of Publication
India
Country of Input or Organization
India
INIS RN
24071660
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
BARIUM OXIDES; CHARGE CARRIERS; COPPER OXIDES; COULOMB FIELD; CRYSTAL DOPING; CRYSTAL STRUCTURE; EXCITATION; HIGH-TC SUPERCONDUCTORS; LANTHANUM OXIDES; PHASE TRANSFORMATIONS; PHONONS; PLASMONS; POTENTIALS; STRONTIUM OXIDES; TRANSITION TEMPERATURE
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; ELECTRIC FIELDS; ENERGY-LEVEL TRANSITIONS; LANTHANUM COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; QUASI PARTICLES; RARE EARTH COMPOUNDS; STRONTIUM COMPOUNDS; SUPERCONDUCTORS; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS