Spontaneous spin current due to triplet superconductor--ferromagnet interfaces

Abstract

We examine the appearance of a spontaneous bulk spin current in a triplet superconductor in contact with a metallic ferromagnet. The spin current results from the spin-flip of Cooper pairs upon reflection from the interface with the ferromagnet, and is shown to display strong similarities to the spontaneous charge current in a Josephson junction. We express the spin current in terms of the Andreev reflection coefficients, which are derived by the construction of the quasiclassical scattering wavefunctions. The dependence of the spin current upon a number of parameters is investigated, in particular the orientation of the magnetic moment of the ferromagnet, the exchange splitting, the temperature, and the orbital pairing state of the triplet superconductor.

8 pages, 7 figures, RevTeX; revised version with corrected text and figure 5(c), added references

References in corpus (13)

• Theory of the proximity effect in junctions with unconventional superconductors
• Spin-dependent Cooper Pair Phase and Pure Spin Supercurrents in Strongly Polarized Ferromagnets
• Manifestation of the odd-frequency spin-triplet pairing state in diffusive ferromagnet / superconductor junctions
• Odd Triplet Pairing in clean Superconductor/Ferromagnet heterostructures
• Theory of superconducting and magnetic proximity effect in S$\mid$F structures with inhomogeneous magnetization textures and spin-active interfaces
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• Interplay of ferromagnetism and triplet superconductivity in a Josephson junction
• 0-$\pi$ transition in magnetic triplet superconductor Josephson junctions
• Josephson Spin Current in Triplet Superconductor Junctions
• Theory of Josephson effect in unconventional superconducting junctions with diffusive barriers
• Interplay between ferromagnetism and superconductivity in tunneling currents
• Origin and control of spin currents in a magnetic triplet Josephson junction
• Proximity effect in ferromagnet/superconductor hybrids: from diffusive to ballistic motion

Cited by in corpus (24)

• Magneto-Josephson effects in junctions with Majorana bound states
• Spin Josephson effect with a single superconductor
• Spin supercurrent in Josephson contacts with noncollinear ferromagnets
• Spin-orbital coupling in a triplet superconductor-ferromagnet junction
• Robustness of Spin-Triplet Pairing and Singlet-Triplet Pairing Crossover in Superconductor/Ferromagnet Hybrids
• Charge and spin supercurrents in triplet superconductor--ferromagnet--singlet superconductor Josephson junctions
• Dissipationless Spin Current between Two Coupled Ferromagnets
• Anisotropic superconducting spin transport at magnetic interfaces
• Adiabatic and nonadiabatic spin torques induced by spin-triplet supercurrent
• Cooper-Pair Spin Current in a Strontium Ruthenate Heterostructure
• Proximity effects in spin-triplet superconductor-ferromagnet heterostucture with spin-active interface
• Spin-polarized Shapiro steps and spin-precession-assisted multiple Andreev reflection
• Flux Quantization Due to Monopole and Dipole Currents
• Super-magnetoresistance effect in triplet spin valves
• Microscopic derivation of Ginzburg-Landau equations for coexistent states of superconductivity and magnetism
• Spin-pumping from a ferromagnetic insulator to an unconventional superconductor with interfacial Andreev bound-states
• Theory of tunneling spectroscopy of normal metal/ferromagnet/spin-triplet superconductor junctions
• Generalized DC and AC Josephson effects in antiferromagnets and in antiferromagnetic d-wave superconductors
• Control of Edge Currents at a Ferromagnet - Triplet Superconductor Interface by Multiple Helical Majorana Modes
• Josephson current between two $p$-wave superconducting nanowires in the presence of Rashba spin-orbit interaction and Zeeman magnetic fields
• Static and dynamic properties of Josephson weak links with singlet and triplet coupling
• Anomalous anisotropic behaviour of spin-triplet proximity effect in Au/SrRuO${}_3$/Sr${}_2$RuO${}_4$ junctions
• Magnetic exchange interaction in spin-valve with chiral spin-triplet superconductor
• Effect of helical edge states on the tunneling conductance in ferromagnet/noncentrosymmetric superconductors junctions