A. Andreone, A. Cassinese, et al.
Physical Review B
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.
A. Andreone, A. Cassinese, et al.
Physical Review B
A. Kussmaul, J.S. Moodera, et al.
Physica C: Superconductivity and its applications
R.P. Vasquez, A. Gupta, et al.
Solid State Communications
R.L. Sandstrom, A.W. Kleinsasser, et al.
IEEE Transactions on Magnetics