Proximity effects in spin-triplet superconductor-ferromagnet heterostucture with spin-active interface

Abstract

We study the physical properties of a ballistic heterostructure made of a ferromagnet (FM) and a spin-triplet superconductor (TSC) with a layered structure stacking along the direction perpendicular to the planes where a chiral px+ipy pairing occurs and assuming spin dependent processes at the interface. We use a self-consistent Bogoliubov-de Gennes approach on a three-dimensional lattice to obtain the spatial profiles of the pairing amplitude and the magnetization. We find that, depending on the strength of the ferromagnetic exchange field, the ground state of the system can have two distinct configurations with a parallel or anti-parallel collinearity between the magnetic moments in the bulk and at the interface. We demonstrate that a magnetic state having non coplanar interface, bulk and Cooper pairs spins may be stabilized if the bulk magnetization is assumed to be fixed along a given direction. The study of the density of states reveals that the modification of the electronic spectrum in the FM plays an important role in the setting of the optimal magnetic configuration. Finally, we find the existence of induced spin-polarized pair correlations in the FM-TSC system.

15 pages, 11 figures

References in corpus (10)

• A spin triplet supercurrent through the half-metallic ferromagnet CrO2
• Superconducting triplet spin valve
• Optimization of spin-triplet supercurrent in ferromagnetic Josephson junctions
• Manifestation of the odd-frequency spin-triplet pairing state in diffusive ferromagnet / superconductor junctions
• Odd Triplet Pairing in clean Superconductor/Ferromagnet heterostructures
• Pairing symmetry conversion by spin-active interfaces in superconducting junctions
• Theory of superconducting and magnetic proximity effect in S$\mid$F structures with inhomogeneous magnetization textures and spin-active interfaces
• 0-$\pi$ transition in magnetic triplet superconductor Josephson junctions
• Spin-orbital coupling in a triplet superconductor-ferromagnet junction
• Josephson effect between triplet superconductors through a ferromagnetic barrier of finite width

Cited by in corpus (11)

• Direct penetration of spin-triplet superconductivity into a ferromagnet in Au/SrRuO3/Sr2RuO4 junctions
• Spin caloritronics with superconductors: Enhanced thermoelectric effects, generalized Onsager response-matrix, and thermal spin currents
• Proximity effect in superconductor/conical magnet/ferromagnet heterostructures
• Theory of tunneling spectroscopy of normal metal/ferromagnet/spin-triplet superconductor junctions
• Inverse Proximity Effects at Spin-Triplet Superconductor-Ferromagnet Interface
• Observation of superconducting gap spectra of long-range proximity effect in Au/SrTiO${}_3$/SrRuO${}_3$/Sr${}_2$RuO${}_4$ tunnel junctions
• Control of Edge Currents at a Ferromagnet - Triplet Superconductor Interface by Multiple Helical Majorana Modes
• Triplet superconductivity and proximity effect induced by Bloch and Néel domain walls
• Controllable enhancement of $p$-wave superconductivity via magnetic coupling to a conventional superconductor
• Anomalous anisotropic behaviour of spin-triplet proximity effect in Au/SrRuO${}_3$/Sr${}_2$RuO${}_4$ junctions
• Tunneling conductance in half-metal/conical magnet/superconductor junctions in the adiabatic and non-adiabatic regime: self-consistent calculations