ac resistivity of d-wave ceramic superconductors

Mai Suan Li; Daniel Domínguez

doi:10.1103/PhysRevB.62.14554

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ac resistivity of d-wave ceramic superconductors

Mai Suan Li, Daniel Domínguez

DOI 10.1103/PhysRevB.62.14554 · Physical Review B

T1

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Abstract

We model d-wave ceramic superconductors with a three-dimensional lattice of randomly distributed π Josephson junctions with finite self-inductance. The linear and nonlinear ac resistivity of the d-wave ceramic superconductors is obtained as a function of temperature by solving the corresponding Langevin dynamical equations. We find that the linear ac resistivity remains finite at temperature Tp where the third harmonics of resistivity has a peak. The current amplitude dependence of the nonlinear resistivity at the peak position is found to be a power law. These results agree qualitatively with experiments. We also show that the peak of the nonlinear resistivity is related to the onset of the paramagnetic Meissner effect which occurs at the crossover temperature Tp, which is above the chiral glass transition temperature Tcg.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu4O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown