Scaling of Nonlinear Longitudinal and Hall Resistivities near the Vortex   Glass Transition
  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 $\rho_{xy}(T)$. 
X. Hu, L. He, L. Yin, Z.H. Ning, H.Y. Xu, X.L. Xu, J.D. Guo, C.Y. Li   and D.L. Yin