J. Paraszczak, J.M. Shaw, et al.
Micro and Nano Engineering
Pinning centers in epitaxial YBa2Cu3O 7- delta films have been investigated by scanning tunneling microscopy and transport studies. An astonishing surface morphology has been found which includes a high density approximately=109 cm-2 of screw dislocations and nanometer-sized holes. The density of screw dislocations can be controlled by varying the growth conditions of the YBa 2Cu3O7- delta films, allowing correlations between critical currents and screw dislocation density to be investigated. Films with higher screw dislocation densities are observed to have higher critical current densities and a slower drop of Jc(H).
J. Paraszczak, J.M. Shaw, et al.
Micro and Nano Engineering
U. Wieser, U. Kunze, et al.
Physica E: Low-Dimensional Systems and Nanostructures
Dipanjan Gope, Albert E. Ruehli, et al.
IEEE T-MTT
O.F. Schirmer, W. Berlinger, et al.
Solid State Communications