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Tuning the 0 - π Josephson junction with a magnetic impurity: Role of tunnel contacts, exchange coupling, e - e interactions and high-spin states.

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.

SUBMITTER: Pal S

PROVIDER: S-EPMC5979961 | biostudies-literature |

REPOSITORIES: biostudies-literature

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