Effects of edge boundaries on Josephson vortices in finite-size layered high-Tc superconductors.
In order to systematically explain the in-plane size effects for the periodical dependence of the Josephson-vortex-flow resistance on the magnetic field, we numerically explore static lattice structures of Josephson vortices in layered high-Tc superconductors with finite in-plane sizes from sub-microm to more than 10 microm by simulating slow quenching processes from high temperature under the magnetic field. The numerical results reveal that in sub-microm size the rectangular lattice is a widely spread major structure in H-T diagram and the triangular lattice is a minor one which emerges only around the specific magnetic field supplying n(phi)0 per one junction area. These results suggest that sub-microm size layered high-Tc superconductors are promising for future device applications.
Machida
Masahiko
M
CCSE, Japan Atomic Energy Research Institue, 6-9-3 Higashi-Ueno, Taito-ku, Tokyo 110-0015 Japan.