Absence of correlated flux pinning by columnar defects in irradiated epitaxial Bi2Sr2CaCu2O8 thin films

F. Hillmer, Gerhard Jakob, P. Haibach, U. Frey, T. Kluge, Hermann Adrian, G. Wirth, E. Jäger & E. Schimpf
Using heavy-ion irradiation, we produced columnar defects of different density and orientation in epitaxial Bi2Sr2CaCu2O8 thin films. Although this increases the normal state resistivity and the critical temperature is reduced proportionally to the volume fraction of damaged material, pinning-related quantities like critical current density, activation energy and depinning field are enhanced in external magnetic fields. Transport measurements in dependence of the magnetic field and its orientation consistently indicate two-dimensional pinning of pancake vortices at the...
This data repository is not currently reporting usage information. For information on how your repository can submit usage information, please see our documentation.