Extended Power Law Nonlinear Response and Amplitude-Dependent ac Susceptibility of High-Tc Superconductors
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Abstract
We show a nonlinear materials equation of superconductors in the form of an extended power law which can be derived from the Ginzburg-Landau (GL) functional. The critical current Jc and ac susceptibility X are analysed by using this equation, and the puzzling question of the increasing height of the out-of-phase susceptibility peak X''peak with increasing amplitude hac is explained.
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