Functional superconductor interfaces from broken time-reversal symmetry
arXiv:0908.2975 · doi:10.1103/PhysRevLett.104.197001
Abstract
The breaking of time-reversal symmetry in a triplet superconductor Josephson junction is shown to cause a magnetic instability of the tunneling barrier. Using a Ginzburg-Landau analysis of the free energy, we predict that this novel functional behaviour reflects the formation of an exotic Josephson state, distinguished by the existence of fractional flux quanta at the barrier. The crucial role of the orbital pairing state is demonstrated by studying complementary microscopic models of the junction. Signatures of the magnetic instability are found in the critical current of the junction.
4 pages, 5 figures, RevTeX
References in corpus (5)
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- 0-pi Josephson tunnel junctions with ferromagnetic barrier
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Cited by in corpus (9)
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- Charge and spin supercurrents in triplet superconductor--ferromagnet--singlet superconductor Josephson junctions
- Nodal Andreev Spectra in Multi-Majorana Three-Terminal Josephson Junctions
- Magnetoelectrically-Tunable Andreev-Bound-State Spectra and Spin Polarization in P-Wave Josephson Junctions
- High orbital-moment Cooper pairs by crystalline symmetry breaking
- Inverse Proximity Effects at Spin-Triplet Superconductor-Ferromagnet Interface
- Magnetic exchange interaction in spin-valve with chiral spin-triplet superconductor