Vortex shear effects in layered superconductors

Abstract

Motivated by recent transport and magnetization measurements in BSSCO samples [B. Khaykovich et al., Phys. Rev B 61, R9261 (2000)], we present a simple macroscopic model describing effects of inhomogeneous current distribution and shear in a layered superconductor. Parameters of the model are deduced from a microscopic calculation. Our model accounts for the strong current non-linearities and the re-entrant temperature dependence observed in the experiment.

Magnetic field distribution due to domain walls in unconventional superconductors

“…In particular, it follows from Eq. (9), that at | w |>> 1 the value of magnetic field decreases as inverse power law, e. g. | h |∼| w | −2 , due to long-range magnetostatic interaction.…”

Transport properties of vortex matter governed by the edge inductance in superconductingBi2Sr2CaCu2O8Beidenkopf1, Myasoedov2, Zeldov3 et al. 2009Phys. Rev. B80100View full textAdd to dashboardCite

“…Due to the extreme anisotropy of BSCCO c is orders of magnitude larger than the in-plane resistivity ab , giving rise to nonlinearities and shear effects. [36][37][38] The dissipation due to c that arises from current tunneling between the CuO 2 planes, however, is not accounted in the electrodynamic considerations of the edge inductance. 33 The nonuniformity of current flow along the c axis can be remedied by introducing columnar defects solely under the current contacts ͓see Fig.…”