Physics – Condensed Matter – Superconductivity
Scientific paper
2005-10-21
Physics
Condensed Matter
Superconductivity
5 pages, 5 figures
Scientific paper
We show that the longitudinal current-voltage characteristics of superconductors in mixed state have the general form of extended power law. Isotherms simulated from this nonlinear equation fit the experimental I-V data of Strachan et al. [ Phys. Rev. Lett. {\bf 87}, 067007 (2001)]. We determine the average pinning force in the flux creep and strong pinning regime and discuss both the puzzling scaling behavior $\rho_{xy}\propto\rho_{xx}^\beta$ and a recently found new scaling relationship of nonlinear Hall resistivity $\rho_{xy}(T)$.
Guo J. D.
He Lixin
Hu Xiao
Li Yanguang Charles
Ning Zhen-Hua
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