Search results for "spin accumulation"

showing 3 items of 3 documents

Supercurrent Induced Charge-Spin Conversion in Spin-Split Superconductors

2017

We study spin-polarized quasiparticle transport in a mesoscopic superconductor with a spin- splitting field in the presence of co-flowing supercurrent. In such a system, the nonequilibrium state is characterized by charge, spin, energy and spin energy modes. Here we show that in the presence of both spin splitting and supercurrent, all these modes are mutually coupled. As a result, the supercurrent can convert charge imbalance, that in the presence of spin splitting decays on a relatively short scale, to a long-range spin accumulation decaying only via inelastic scattering. This effect enables coherent charge-spin conversion controllable by a magnetic flux, and it can be detected by studyin…

Field (physics)superfluid densityFOS: Physical sciences02 engineering and technologyInelastic scattering01 natural sciencessuprajohteetSuperconductivity (cond-mat.supr-con)transport propertiesCondensed Matter::Superconductivity0103 physical sciences010306 general physicsSpin-½PhysicsSuperconductivityspin accumulationMesoscopic physicsspin currentta114Condensed matter physicsCondensed Matter - SuperconductivityCharge (physics)021001 nanoscience & nanotechnologyspin relaxationMagnetic fluxQuasiparticleCondensed Matter::Strongly Correlated Electrons0210 nano-technology
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Domain wall motion in a diffusive weak ferromagnet

2019

We study the domain wall motion in a disordered weak ferromagnet, induced by injecting a spin current from a strong ferromagnet. Starting from the spin diffusion equation describing the spin accumulation in the weak ferromagnet, we calculate the force and torque acting on the domain wall. We also study the ensuing domain wall dynamics, and suggest a possible measurement method for detecting the domain wall motion via measuring the additional resistance.

magneetitFOS: Physical sciencesMotion (geometry)02 engineering and technologySpin current01 natural sciencestiiviin aineen fysiikkaMesoscale and Nanoscale Physics (cond-mat.mes-hall)0103 physical sciencesTorqueelectrical spin injectionmagnetismi010306 general physicsSpin-½Physicsspin accumulationMeasurement methodspin currentCondensed Matter - Mesoscale and Nanoscale PhysicsCondensed matter physicsdomain wallsspin transfer torque021001 nanoscience & nanotechnologyferromagnetismspin diffusionspin relaxationDomain wall (magnetism)FerromagnetismSpin diffusionCondensed Matter::Strongly Correlated Electrons0210 nano-technologyPhysical Review B
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Supercurrent-induced charge-spin conversion in spin-split superconductors

2018

We study spin-polarized quasiparticle transport in a mesoscopic superconductor with a spin-splitting field in the presence of coflowing supercurrent. In such a system, the nonequilibrium state is characterized by charge, spin, energy, and spin-energy modes. Here we show that in the presence of both spin splitting and supercurrent, all these modes are mutually coupled. As a result, the supercurrent can convert charge imbalance, which in the presence of spin splitting decays on a relatively short scale, to a long-range spin accumulation decaying only via inelastic scattering. This effect enables coherent charge-spin conversion controllable by a magnetic flux, and it can be detected by studyin…

spin accumulationspin currenttransport propertiessuperfluid densityCondensed Matter::SuperconductivityCondensed Matter::Strongly Correlated Electronsspin relaxationsuprajohteet
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