Effect of the irradiation of Au ions on the negative Hall resistivity for YBCO films
Journal
Physica C: Superconductivity and its applications
Journal Volume
243
Journal Issue
1-2
Pages
177-182
Date Issued
1995
Author(s)
Huang, C. Y.
Wang, L. M.
Cho, H. M.
Yang, H. C.
Horng, H. E.
Wang, C. W.
Lin, E. K.
Abstract
The temperature dependence of longitudinal and transversal resistivities (ρ{variant}xx(T) and ρ{variant}xy (T), respectively) near the transition region for YBCO films have been measured before and after the irradiation of Au ions. Our results show that the peak value of the negative ρ{variant}xy increases significantly at 0.5 T but remains nearly the same at 4 T after the irradiation. The power law of [ρ{variant}xy = ρ{variant}xxα] has been extracted for our films, with α ranging from 0.9 to 1.6. There is no correlation found between the magnitude of negative ρ{variant}xy and the α values. The field dependence of the irradiation effect on ρ{variant}xy(T) suggests a complicated interplay between the magnetic field and the defects on the mechanism of the anomalous Hall effect. © 1995.
Type
journal article