en
Scientific article
English

Effects of enhancement for positron annihilation in high-Tc oxides

Published inMaterials science forum, vol. 105-110, p. 599-602
Publication date1992
Abstract

We apply various approaches describing the enhancement factor for the annihilation rate. The electron and positron band structures were obtained using the LMTO method. The calculated positron lifetimes are very sensitive to the description of the enhancement factor and for that reason it is a crucial test for the theory. Calculations were first tested on simple materials and then applied to the more complicated high-Tc copper oxides. We also present calculations of the momentum densities where the enhancement effect is less dramatic.

eng
Keywords
  • Positron annihilation studies
  • Superconductivity
Citation (ISO format)
BARBIELLINI-AMIDEI, Bernardo Gaetano et al. Effects of enhancement for positron annihilation in high-T<sub>c </sub>oxides. In: Materials science forum, 1992, vol. 105-110, p. 599–602. doi: 10.4028/www.scientific.net/MSF.105-110.599
Main files (1)
Article (Published version)
accessLevelRestricted
Identifiers
ISSN of the journal0255-5476
19views
0downloads

Technical informations

Creation09/08/2023 11:43:49 AM
First validation09/13/2023 10:44:41 AM
Update time09/13/2023 10:44:41 AM
Status update09/13/2023 10:44:41 AM
Last indexation01/18/2024 12:49:27 AM
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack