P. Lecoeur, P.L. Trouilloud, et al.
Journal of Applied Physics
Using a magneto-optical technique, we have nondestructively imaged macroscopic variations in magnetic flux that penetrate laser-ablated, c-axis oriented, epitaxial YBa2Cu3O7 superconducting films deposited on crystalline (100)SrTiO3 substrates. Flux penetration into YBa2Cu3O7 films in an externally applied magnetic field is enhanced at crystalline substrate defect sites. A relationship between flux penetration and substrate defects is experimentally demonstrated with a YBa2Cu3O7 film deposited on an intentionally degraded crystalline SrTiO3 surface.
P. Lecoeur, P.L. Trouilloud, et al.
Journal of Applied Physics
J.R. Kirtley, C.D. Tesche, et al.
Physical Review Letters
D.K. Petrov, A. Gupta, et al.
Journal of Applied Physics
A. Gupta, G. Koren, et al.
Proceedings of SPIE 1989