Mesoscopic Josephson junctions with switchable current-phase relation

Abstract

We propose and analyze a mesoscopic Josephson junction consisting of two ferromagnetic insulator-superconductors (FI-Ss) coupled through a normal metal (N) layer. The Josephson current of the junction is non-trivially affected by the spin-splitting field induced by the FIs in the two superconductors. In particular, it shows sizeable enhancement by increasing the amplitude of the exchange field ($h_{ex}$) and displays a switchable current-phase relation which depends on the relative orientation of $h_{ex}$ in the FIs. In a realistic EuS/Al-based setup this junction can be exploited as a high-resolution threshold sensor for the magnetic field as well as an on-demand tunable kinetic inductor.

4.5 pages, 5 color figures

References in corpus (11)

• Superconducting Spintronics
• A spin triplet supercurrent through the half-metallic ferromagnet CrO2
• Phase controlled superconducting proximity effect probed by tunneling spectroscopy
• Inverse proximity effect in superconductor-ferromagnet bilayer structures
• Superconductors as ideal spin sources for spintronics
• Spin-Resolved Tunneling Studies of the Exchange Field in EuS/Al Bilayers
• Highly-sensitive superconducting quantum interference proximity transistor
• Fermi-liquid effects in the gapless state of marginally thin superconducting films
• Proximity nanovalve with large phase-tunable thermal conductance
• Phase-tunable colossal magneto-heat resistance in ferromagnetic Josephson thermal valves
• Quantum interference hybrid spin-current injector

Cited by in corpus (6)

• Colloquium: Nonequilibrium effects in superconductors with a spin-splitting field
• Thermal, electric and spin transport in superconductor/ferromagnetic-insulator structures
• Magnetically-driven colossal supercurrent enhancement in InAs nanowire Josephson junctions
• Coexistence of superconductivity and spin-splitting fields in superconductor/ferromagnetic insulator bilayers of arbitrary thickness
• Quasiparticle density of states and triplet correlations in superconductor/ferromagnetic-insulator structures across a sharp domain wall
• Percolative supercurrent in superconductor-ferromagnetic insulator bilayers