Magnetic-coupling-dependent spin-triplet supercurrents in helimagnet/ferromagnet Josephson junctions
arXiv:1209.5355 · doi:10.1103/PhysRevB.84.024517
Abstract
The experimental achievements during the past year in demonstrating the existence of long-ranged spin-triplet supercurrents in ferromagnets proximity coupled to singlet superconductors open up the possibility for new interesting physics and applications [for a review, see M. Eschrig, Phys. Today 64(1), 43 (2011)]. Our group reported the injection of triplet supercurrents into a magnetically uniform ferromagnet (Co) by sandwiching it between two helimagnet/superconductor (Ho/Nb) bilayers to form a Nb/Ho/Co/Ho/Nb-type Josephson device. In the function of the Ho layer thicknesses, the supercurrent was found to modulate in a complex way that seemed to depend on the magnetic structure of Ho. To understand this unusual behavior, we have theoretically studied the properties of an ideal Josephson device with a helimagnet/ferromagnet/helimagnet (HM/F/HM) barrier in the clean limit using the Eilenberger equation; we show, in particular, that the maximum triplet supercurrent that can pass across the barrier will depend non-monotonically on the thicknesses of the HM layers if the HM and F layers are magnetically exchange coupled at their interface.
5 pages, 3 figures
References in corpus (23)
- Proximity effects in superconductor-ferromagnet heterostructures
- Odd Triplet Superconductivity and Related Phenomena in Superconductor-Ferromagnet Structures
- Coupling of two superconductors through a ferromagnet : evidence for a pi-junction
- A spin triplet supercurrent through the half-metallic ferromagnet CrO2
- Long-range effects in superconductor-ferromagnet structures
- Observation of spin-triplet superconductivity in Co-based Josephson Junctions
- Triplet supercurrents in clean and disordered half-metallic ferromagnets
- Theory of Half Metal-Superconductor Heterostructures
- Long range triplet Josephson effect through a ferromagnetic trilayer
- Critical Current Oscillations in Strong Ferromagnetic Pi-Junctions
- Superconducting phase coherent electron transport in proximity conical ferromagnets
- Superconducting proximity effect in a mesoscopic ferromagnetic wire
- Giant Mutual Proximity Effects in Ferromagnetic/Superconducting Nanostructures
- Josephson tunnel junctions with strong ferromagnetic interlayer
- Long range proximity effect in La2/3Ca1/3MnO3 (LCMO)/(100)YBa2Cu3O7-delta (YBCO) ferromagnet/superconductor bilayers: Evidence for induced triplet superconductivity in the ferromagnet
- Odd spin-triplet superconductivity in a multilayered superconductor-ferromagnet Josephson junction
- Critical current of a Josephson junction containing a conical magnet
- Long-range spin-triplet proximity effect in Josephson junctions with multilayered ferromagnets
- Spin-triplet Supercurrent through Inhomogeneous Ferromagnetic Trilayers
- Josephson Junctions with a synthetic antiferromagnetic interlayer
- Nonsinusoidal current-phase relation in strongly ferromagnetic and moderately disordered SFS junctions
- 0-pi oscillations in nanostructured Nb/Fe/Nb Josephson junctions
- Triplet supercurrent due to spin-active zones in a Josephson junction
Cited by in corpus (30)
- Superconducting Spintronics
- Spin-polarized supercurrents for spintronics: a review of current progress
- Theoretical Model of Superconducting Spintronic SIsFS Devices
- Macroscopic quantum tunneling in spin filter ferromagnetic Josephson junctions
- Magnetization-control and transfer of spin-polarized Cooper pairs into a half-metal manganite
- Meissner Effect Probing of Odd-Frequency Triplet Pairing in Superconducting Spin Valves
- φ-State and Inverted Fraunhofer Pattern in Nonaligned Josephson Junctions
- Spin Controlled Coexistence of 0 and π States in SFSFS Josephson Junctions
- Superconducting Phase Domains for Memory Applications
- Possible evidence for spin-transfer torque induced by spin-triplet supercurrent
- Superconducting spin valves controlled by spiral re-orientation in B20-family magnets
- Reentrant superconductivity in conical-ferromagnet/superconductor nanostructures
- Proximity Effects in Conical-Ferromagnet/Superconductor bilayers
- Magnon spin current induced by triplet Cooper pair supercurrents
- Magnetic exchange fields and domain wall superconductivity at an all-oxide superconductor / ferromagnet insulator interface
- Chirality-controlled spontaneous currents in spin-orbit coupled superconducting rings
- Long-range spin current driven by superconducting phase difference in a Josephson junction with double layer ferromagnets
- Singlet-Triplet Superconducting Quantum Magnetometer
- Proximity effect in superconductor/conical magnet/ferromagnet heterostructures
- Nanoscale spin ordering and spin screening effects in tunnel ferromagnetic Josephson junctions
- Proximity effect in superconductor/conical magnet heterostructures
- Chirality and spin transformation of triplet Cooper pairs upon interaction with singlet condensate
- Magnetic field tunable superconducting transition in Nb/Co/Py/Nb exchange spring multilayers
- Josephson effect in multi-terminal superconductor-ferromagnet junctions coupled via triplet components
- Peculiar long-range supercurrent in SFS junction containing a noncollinear magnetic domain in the ferromagnetic region
- Spin-flipping with Holmium: Case study of proximity effect in superconductor/ferromagnet/superconductor heterostructures
- Long-Range triplet Josephson Current driven by the bias voltage
- Excess current in ferromagnet-superconductor structures with fully polarized triplet component
- Tunneling conductance in half-metal/conical magnet/superconductor junctions in the adiabatic and non-adiabatic regime: self-consistent calculations
- Phase separation and proximity effects in itinerant ferromagnet-superconductor heterostructures