Weak-localization effect in superconductors from radiation damage

Article

关键词: METAL-INSULATOR-TRANSITION;    A-15 SUPERCONDUCTORS;    ELECTRICAL-RESISTIVITY;    UNIVERSAL DEGRADATION;    NEUTRON-IRRADIATION;    HEAT-CAPACITY;    TC;    CONDUCTIVITY;    FILMS;    PARAMETERS;   

DOI  :  10.1103/PhysRevB.61.14733

来源: SCIE

【 摘 要 】

Large reductions of the superconducting transition temperature T-c and the accompanying loss of the thermal electrical resistivity (electron-phonon interaction) due to radiation damage have been observed for several A15 compounds, Chevrel phase and ternary superconductors, and NbSe2 in the high-fluence regime. We examine these behaviors based on a recent theory of the weak localization effect in superconductors. We find a good fitting to the experimental data. In particular, the weak localization correction to the phonon-mediated interaction is derived from the density correlation function. It is shown that weak localization has a strong influence on both the phonon-mediated interaction and the electron-phonon interaction, which leads to the universal correlation of T-c and the resistance ratio.

【 授权许可】

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