Increased Pinning Energies and Critical Current Densities in Heavy-Ion-Irradiated Bi2Sr2CaCu2O8 Single Crystals
We report a significant increase in the pinning energy of vortices in single-crystal Bi2Sr2CaCu2O8 when irradiated with heavy ions such as Ar+. This is in contrast with the results of light ion (H+, He+) irradiations which give pinning energies comparable with those of unirradiated crystals. The stronger pinning is attributed to defects larger than point defects, e.g., clusters or amorphized regions. As a result of higher pinning energies, critical currents persist at markedly higher temperatures and fields.
MSU Digital Commons Citation
Cutro, J. A.; Rudman, D. A.; Orlando, Terry P.; Van Dover, Robert B.; Schneemeyer, Lynn; White, Alice E.; Gyorgy, E.Michael; Waszczak, Joseph V.; and Felder, R. J., "Increased Pinning Energies and Critical Current Densities in Heavy-Ion-Irradiated Bi2Sr2CaCu2O8 Single Crystals" (1993). Department of Chemistry and Biochemistry Faculty Scholarship and Creative Works. 495.