Cooperative Charge Pumping and Enhanced Skyrmion Mobility
arXiv:1804.02460 · doi:10.1103/PhysRevLett.121.257203
Abstract
The electronic pumping arising from the steady motion of ferromagnetic skyrmions is investigated by solving the time evolution of the Schrodinger equation implemented on a tight-binding model with the statistical physics of the many-body problem. It is shown that the ability of steadily moving skyrmions to pump large charge currents arises from their non-trivial magnetic topology, i.e. the coexistence between spin-motive force and topological Hall effect. Based on an adiabatic scattering theory, we compute the pumped current and demonstrate that it scales with the reflection coefficient of the conduction electrons against the skyrmion. Finally, we propose that such a phenomenon can be exploited in the context of racetrack devices, where the electronic pumping enhances the collective motion of the train of skyrmions.
References in corpus (24)
- Skyrmion Lattice in a Chiral Magnet
- Advances in the Physics of Magnetic Skyrmions and Perspective for Technology
- Observation of room temperature magnetic skyrmions and their current-driven dynamics in ultrathin Co films
- Blowing Magnetic Skyrmion Bubbles
- Spin Transfer Torques in MnSi at Ultra-low Current Densities
- Direct Observation of the Skyrmion Hall Effect
- Skyrmions at room temperature : From magnetic thin films to magnetic multilayers
- Additive interfacial chiral interaction in multilayers for stabilization of small individual skyrmion at room temperature
- Room temperature chiral magnetic skyrmion in ultrathin magnetic nanostructures
- Current-induced skyrmion dynamics in constricted geometries
- Skyrmion Hall Effect Revealed by Direct Time-Resolved X-Ray Microscopy
- Scattering approach to parametric pumping
- Microscopic approach to current-driven domain wall dynamics
- Room-temperature current-induced generation and motion of sub-100nm skyrmions
- Dissipation and noise in adiabatic quantum pumps
- Adiabatic transport in nanostructures
- The Magnus Force on Skyrmions in Ferromagnets and the Quantum Hall Effect
- Numerical simulations of time resolved quantum electronics
- Topological Hall and Spin Hall Effects in Disordered Skyrmionic Textures
- Enhanced Non-Adiabaticity in Vortex Cores due to the Emergent Hall Effect
- A linear-scaling source-sink algorithm for simulating time-resolved quantum transport and superconductivity
- Intrinsic non-adiabatic topological torque in magnetic skyrmions and vortices
- Towards Realistic Time-Resolved Simulations of Quantum Devices
- Electric signature of magnetic domain-wall dynamics
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- High-harmonic generation in spin and charge current pumping at ferromagnetic or antiferromagnetic resonance in the presence of spin-orbit coupling
- Pseudo Electric Field and Pumping Valley Current in Graphene Nano-bubbles
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