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Tuning the 0 - π Josephson junction with a magnetic impurity: Role of tunnel contacts, exchange coupling, e - e
Subhajit Pal1, Colin Benjamin2
1School of Physical Sciences, National Institute of Science Education & Research, HBNI, Jatni, 752050, India.
Abstract:
We propose Josephson junction with a high-spin magnetic impurity sandwiched between two superconductors. This system shows a π junction behavior as a function of the spin magnetic moment state of the impurity, the interface transparency, exchange coupling and electron-electron interactions in the system. The system is theoretically analyzed for possible reason behind the π shift. The crucial role of spin flip scattering is highlighted. Possible applications in quantum computation of our proposed tunable high spin magnetic impurity π junction is underscored.
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