Flux creep and flux jumping.

دینامیک شار در ابررسانای Y3Ba5Cu8O18

We have studied the thermally activated flux creep of a newly fabricated superconductor Y3Ba5Cu8O18 with the superconducting transition temperature 102 K. Analysis of the transition spread from the normal state to superconducting state in the electrical resistivity revealed that the thermally activated flux creep explains the electron share in the vicinity of the transition temperature Tc. The ...

Irreversibility and flux creep properties of the superconducting oxide La1.85Sr 0.15CuO4

Torque measurements on a ceramic sample of the oxide La-Sr-Cu-O give information on its superconducting properties. Under steady rotation of the magnetic field torque signals are observed which indicate rigid or viscous responses of the flux line structure depending on the magnetic history of the sample and the strength of the applied field. If the field is turned to a new direction at time zer...

Dependence of the flux-creep activation energy on current density and magnetic field for the MgB2 superconductor

Dip effect in ac susceptibility due to surface barrier with flux creep

Flux distribution in superconducting films with holes

Flux penetration into type-II superconducting films is simulated for transverse applied magnetic field and flux creep dynamics. The films contain macroscopic nonconducting holes, and we introduce the holes in the simulation formalism by reconstruction of the magnetic field change inside the holes. We find that the holes induce a region of reduced flux density extending toward the nearest sample...