Temperature-dependent spin-transport and current-induced torques in superconductor/ferromagnet heterostructures

Abstract

We investigate the injection of quasiparticle spin currents into a superconductor via spin pumping from an adjacent FM layer.To this end, we use NbN/\ch{Ni80Fe20}(Py)-heterostructures with a Pt spin sink layer and excite ferromagnetic resonance in the Py-layer by placing the samples onto a coplanar waveguide (CPW). A phase sensitive detection of the microwave transmission signal is used to quantitatively extract the inductive coupling strength between sample and CPW, interpreted in terms of inverse current-induced torques, in our heterostructures as a function of temperature. Below the superconducting transition temperature $T_{\mathrm{c}}$, we observe a suppression of the damping-like torque generated in the Pt layer by the inverse spin Hall effect (iSHE), which can be understood by the changes in spin current transport in the superconducting NbN-layer. Moreover, below $T_{\mathrm{c}}$ we find a large field-like current-induced torque.

4 pages, 4 figures

References in corpus (51)

• Proximity effects in superconductor-ferromagnet heterostructures
• Odd Triplet Superconductivity and Related Phenomena in Superconductor-Ferromagnet Structures
• Superconducting Spintronics
• Room Temperature Reversible Spin Hall Effect
• Spin pumping and magnetization dynamics in metallic multilayers
• A spin triplet supercurrent through the half-metallic ferromagnet CrO2
• Spin Pumping and Inverse Spin Hall Effect in Platinum: The Essential Role of Spin-Memory Loss at Metallic Interfaces
• Spin-polarized supercurrents for spintronics: a review of current progress
• Intrinsic vs. extrinsic anomalous Hall effect in ferromagnets
• Identification of the dominant precession damping mechanism in Fe, Co, and Ni by first-principles calculations
• Superconducting properties and Hall Effect of epitaxial NbN thin films
• Ferromagnetic resonance linewidth in ultrathin films with perpendicular magnetic anisotropy
• Extremely long quasiparticle spin lifetimes in superconducting aluminium using MgO tunnel spin injectors
• Determination of spin Hall effect and spin diffusion length of Pt from self-consistent fitting of damping enhancement and inverse spin-orbit torque measurements
• Spin dynamics in a superconductor / ferromagnet proximity system
• Direct and inverse spin-orbit torques
• Superconducting properties of very high quality NbN thin films grown by high temperature chemical vapor deposition
• Spin injection and relaxation in a mesoscopic superconductor
• Controlling the superconducting transition by spin-orbit coupling
• Microscopic theory of spin transport at the interface between the superconductor and a ferromagnetic insulator
• Spin pumping into superconductors: A new probe of spin dynamics in a superconducting thin film
• Spontaneous currents in superconducting systems with strong spin-orbit coupling
• Large room temperature spin-to-charge conversion signals in a few-layer graphene/Pt lateral heterostructure
• Effect of Meissner screening and trapped magnetic flux on magnetization dynamics in thick Nb/Ni80Fe20/Nb trilayers
• Probe of Spin Dynamics in Superconducting NbN Thin Films via Spin Pumping
• Electromagnetic proximity effect in planar superconductor-ferromagnet structures
• Supercurrent in ferromagnetic Josephson junctions with heavy metal interlayers
• Strong asymmetry of microwave absorption by bi-layer conducting ferromagnetic films in the microstrip-line based broadband ferromagnetic resonance
• Temperature dependence of resistivity and Hall-coefficient in a strongly disordered metal: NbN
• Inductive detection of field-like and damping-like AC inverse spin-orbit torques in ferromagnet/normal metal bilayers
• Dependence of nonlocal Gilbert damping on the ferromagnetic layer type in FM/Cu/Pt heterostructures
• Microwave Surface Impedance Measurements of LiFeAs Single Crystals
• Spin transport parameters of NbN thin films characterised by spin pumping experiments
• Spin-transport in superconductors
• High Spin-Wave Propagation Length Consistent with Low Damping in a Metallic Ferromagnet
• Superconductivity-induced change in magnetic anisotropy in epitaxial ferromagnet-superconductor hybrids with spin-orbit interaction
• Proximity effect-assisted absorption of spin currents in superconductors
• Abrikosov vortex nucleation and its detrimental effect on superconducting spin pumping in Pt/Nb/Ni80Fe20/Nb/Pt proximity structures
• Radiofrequency generation by coherently moving fluxons
• Magnetization reorientation due to the superconducting transition in heavy-metal heterostructures
• Supercurrent in ferromagnetic Josephson junctions with heavy metal interlayers. II. Canted magnetization
• Spin-relaxation and magnetoresistance in FM/SC/FM tunnel junctions
• Spin supercurrent in two-dimensional superconductors with Rashba spin-orbit interaction
• Intrinsic Spin Hall Effect in s-wave Superconducting State: Analysis of Rashba Model
• Coplanar waveguide based ferromagnetic resonance in ultrathin film magnetic nanostructures: impact of conducting layers
• Relaxation mechanism driven by spin angular momentum absorption throughout antiferromagnetic phase transition in NiFe surface oxides
• Spin-current coherence peak in superconductor/magnet junctions
• Flux flow spin Hall effect in type-II superconductors with spin-splitting field
• Supercurrent-Induced Spin-Orbit Torques
• Paramagnetic Meissner effect in voltage-biased proximity systems
• Effect of interfacial oxidation layer in spin pumping experiments on Ni${}_{80}$Fe${}_{20}$/SrIrO${}_3$ heterostructures

Cited by in corpus (11)

• Boosting spintronics with superconductivity
• Magnon spin current induced by triplet Cooper pair supercurrents
• Dynamics of two ferromagnetic insulators coupled by superconducting spin current
• Ferromagnetic resonance modulation in $d$-wave superconductor/ferromagnetic insulator bilayer systems
• Magnon-Cooparons in magnet-superconductor hybrids
• Spin pumping in d-wave superconductor/ferromagnet hybrids
• Temperature dependence of the magnon-phonon interaction in high overtone bulk acoustic resonator-ferromagnetic thin film hybrids
• Interfacial control of vortex-limited critical current in type II superconductor films
• Giant oscillatory Gilbert damping in superconductor/ferromagnet/superconductor junctions
• Growth optimization of TaN for superconducting spintronics
• AC/DC spin current in ferromagnet/superconductor/normal metal trilayer systems