Published August 2004 | Version v1
Journal article Metadata-only

Positron annihilation study of La2-xMxCuO4 (M=Sr, Ba) system

Creators

  • 1. Henan Normal Univ., Xinxiang (China). College of Physics and Information Engineering

Description

The positron lifetime spectra of La2-xMxCuO4 (LMCO, M=Sr, Ba, x=0.05, 0.10, 0.125, 0.15, 0.2) were measured at room temperature for studying the long-standing mystery of '1/8 abnormal' in doped lanthanum cuprate. Electron density ne and void concentration (number density) CV were calculated as a function of substitution content x. The appearance of peak (ne) and valley (CV) at x=0.125 and the correlation with superconductivity were discussed. (authors)

Additional details

Publishing Information

Journal Title
Nuclear Techniques
Journal Volume
27
Journal Issue
8
Journal Page Range
p. 594-597
ISSN
0253-3219

INIS

Country of Publication
China
Country of Input or Organization
China
INIS RN
37089359
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
ANNIHILATION; BARIUM COMPOUNDS; CRYSTAL DOPING; CUPRATES; ELECTRON DENSITY; LANTHANUM COMPOUNDS; LIFETIME; PEAKS; POSITRONS; STRONTIUM COMPOUNDS; SUPERCONDUCTIVITY; SUPERCONDUCTORS; VOIDS
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; ANTILEPTONS; ANTIMATTER; ANTIPARTICLES; COPPER COMPOUNDS; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; ELEMENTARY PARTICLES; FERMIONS; INTERACTIONS; LEPTONS; MATTER; OXYGEN COMPOUNDS; PARTICLE INTERACTIONS; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; TRANSITION ELEMENT COMPOUNDS

Optional Information

Notes
4 figs., 2 tabs., 14 refs.