Peralagu, U. and Weides, M. (2008) Fabrication and characterization of short Josephson junctions with stepped ferromagnetic barrier. Superconductivity News Forum, 3(ST27), pp. 1-6.
Full text not currently available from Enlighten.
Abstract
We present novel low-T_c superconductor-insulator-ferromagnet-superconductor (SIFS) Josephson junctions with planar and stepped ferromagnetic interlayer. We optimized the fabrication process to set a step in the ferromagnetic layer thickness. Depending on the thickness of the ferromagnetic layer the ground state of the SIFS junction has a phase drop of either 0 or pi. So-called 0-pi Josephson junctions, in which 0 and pi ground states compete with each other, were obtained. These stepped junctions may have a double degenerate ground state, corresponding to a vortex of supercurrent circulating clock- or counterclockwise and creating a magnetic flux which carries a fraction of the magnetic flux quantum \Phi_0. Here, we limit the presentation to static properties of short junctions.
Item Type: | Articles |
---|---|
Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Peralagu, Mr Uthayasankaran |
Authors: | Peralagu, U., and Weides, M. |
College/School: | College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering |
Journal Name: | Superconductivity News Forum |
ISSN: | 0897-2427 |
Related URLs: |
University Staff: Request a correction | Enlighten Editors: Update this record