Electrical detection of spin pumping: dc voltage generated by ferromagnetic resonance at ferromagnet/nonmagnet contact
arXiv:0809.3859 · doi:10.1103/PhysRevB.78.064423
Abstract
We describe electrical detection of spin pumping in metallic nanostructures. In the spin pumping effect, a precessing ferromagnet attached to a normal-metal acts as a pump of spin-polarized current, giving rise to a spin accumulation. The resulting spin accumulation induces a backflow of spin current into the ferromagnet and generates a dc voltage due to the spin dependent conductivities of the ferromagnet. The magnitude of such voltage is proportional to the spin-relaxation properties of the normal-metal. By using platinum as a contact material we observe, in agreement with theory, that the voltage is significantly reduced as compared to the case when aluminum was used. Furtheremore, the effects of rectification between the circulating rf currents and the magnetization precession of the ferromagnet are examined. Most significantly, we show that using an improved layout device geometry these effects can be minimized.
9 pages, 11 figures
References in corpus (19)
- Microwave Oscillations of a Nanomagnet Driven by a Spin-Polarized Current
- Basic obstacle for electrical spin-injection from a ferromagnetic metal into a diffusive semiconductor
- Enhanced Gilbert Damping in Thin Ferromagnetic Films
- Current-driven Magnetization Reversal and Spin Wave Excitations in Co/Cu/Co Pillars
- Anatomy of Spin-Transfer Torque
- Finite-element theory of transport in ferromagnet-normal metal systems
- Spin battery operated by ferromagnetic resonance
- Dynamic exchange coupling in magnetic bilayers
- Spin-transfer-driven ferromagnetic resonance of individual nanomagnets
- Electrical detection of spin pumping due to the precessing magnetization of a single ferromagnet
- Spin Torques in Ferromagnetic/Normal Metal Structures
- Interface resistance of disordered magnetic multilayers
- Conductance modulation by spin precession in non-collinear ferromagnet-normal metal-ferromagnet systems
- Large cone angle magnetization precession of an individual nanomagnet with dc electrical detection
- Voltage generation by ferromagnetic resonance
- Enhancement of the Gilbert damping constant due to spin pumping in noncollinear ferromagnet/nonmagnet/ferromagnet trilayer systems
- On-chip detection of ferromagnetic resonance of a single submicron permalloy strip
- Resonances in Ferromagnetic Gratings Detected by Microwave Photoconductivity
- Unified description of bulk and interface-enhanced spin pumping
Cited by in corpus (14)
- Spin Hall Angle Quantification from Spin Pumping and Microwave Photoresistance
- Temperature dependent spin transport properties of Platinum inferred from spin Hall magnetoresistance measurements
- Dynamic RKKY interaction in graphene
- Spin and charge pumping in magnetic tunnel junctions with precessing magnetization: A nonequilibrium Green function approach
- Charge pumping by magnetization dynamics in magnetic and semi-magnetic tunnel junctions with interfacial Rashba or bulk extrinsic spin-orbit couplings
- Attenuation characteristics of spin pumping signal due to travelling spin waves
- Graphene-based spin-pumping transistor
- High-harmonic generation in spin and charge current pumping at ferromagnetic or antiferromagnetic resonance in the presence of spin-orbit coupling
- Detection of spin pumping from YIG by spin-charge conversion in a Au/NiFe spin-valve structure
- Electrical detection of microwave assisted magnetization reversal by spin pumping
- Dynamic RKKY interaction between magnetic moments in graphene nanoribbons
- Graphene as a non-magnetic spin-current lens
- RF field characterization and rectification effects in spin pumping and spin-torque FMR for spin-orbitronics
- Exchange-dominated Standing Spin Wave Excitations under microwave irradiation in Ni80Fe20 Thin Films