Nonlinear fluctuations of the order parameter and paraconductivity suppression in a magnetic field
G. G. SergeevaPhysicotechnical Institute, Academy of Sciences of the Ukrainian SSR, KharkovAleksei V. ChechkinPhysicotechnical Institute, Academy of Sciences of the Ukrainian SSR, Kharkov
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The expressions for the transverse and longitudinal components of the Aslamazov-Larkin fluctuational conductivity (paraconductivity) are obtained by taking into account the nonlinear interaction of fluctuations for layered HTS in a magnetic field H∥c. The introduction of the nonlinear interaction makes it possible to describe satisfactorily (i.e., without a fitting factor) the observed temperature dependence of resistivity in a magnetic field above Tc
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