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Charge Fluctuation in the High T c Superconductor YBaCuO in the Transition Temperature Region
Author(s) -
Chen Ling,
Wang Guanghou,
Teng Mingkang
Publication year - 1990
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221570141
Subject(s) - superconductivity , condensed matter physics , anomaly (physics) , annihilation , positron , positron annihilation , electron , physics , transition temperature , superconducting transition temperature , charge (physics) , high temperature superconductivity , nuclear physics , quantum mechanics
Positron annihilation rates in both, high and low T c superconductors are calculated by considering the interaction between the thermalized positrons and electrons in superconducting and normal state in the framework the of KSS model. By properly chosen parameters (for instance, E F = 0.7 eV) the anomaly of positron annihilation rate in the high T c superconductor YBaCuO at the transition temperature is predicted and is in agreement with recent experimental results.