Spin pumping and spin-transfer torques in antiferromagnets
arXiv:1404.4023 · doi:10.1103/PhysRevLett.113.057601
Abstract
Spin pumping and spin-transfer torques are two reciprocal phenomena widely studied in ferromagnetic materials. However, pumping from antiferromagnets and its relation to current-induced torques have not been explored. By calculating how electrons scatter off a normal metal-antiferromagnetic interface, we derive pumped spin and staggered spin currents in terms of the staggered field, the magnetization, and their rates of change. For both compensated and uncompensated interfaces, spin pumping is of a similar magnitude as in ferromagnets with a direction controlled by the polarization of the driving microwave. The pumped currents are connected to current-induced torques via Onsager reciprocity relations.
5 pages, 4 figures
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Cited by in corpus (22)
- Imaging current-induced switching of antiferromagnetic domains in CuMnAs
- Negative spin Hall magnetoresistance of Pt on the bulk easy-plane antiferromagnet NiO
- Anti-damping spin transfer torque through epitaxial Nickel oxide
- Antiferromagnetic Domain Wall as Spin Wave Polarizer and Retarder
- THz-Frequency Spin-Hall Auto-Oscillator Based on a Canted Antiferromagnet
- Ultrafast Switching of Antiferromagnets via Spin-transfer Torque
- Antiferromagnetic Piezospintronics
- Spin Superfluidity in Biaxial Antiferromagnetic Insulators
- Spin pumping and shot noise in ferrimagnets: bridging ferro- and antiferromagnets
- Topological spin Hall effects and tunable skyrmion Hall effects in uniaxial antiferromagnetic insulators
- Switching of a large anomalous Hall effect between metamagnetic phases of a non-collinear antiferromagnet
- Mode-Dependent Damping in Metallic Antiferromagnets Due to Inter-Sublattice Spin Pumping
- Spin diffusion and torques in disordered antiferromagnets
- Crystal field effects on spin pumping
- Berry-phase effects and electronic dynamics in noncollinear antiferromagnetic texture
- Spin-wave chirality and its manifestations in antiferromagnets
- Piezospintronic effect in honeycomb antiferromagnets
- Antiferromagnetic resonance excited by oscillating electric currents
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- Part of a collection of reviews on antiferromagnetic spintronics. Antiferromagnetic dynamics, spin-texures, and nanostructures
- Magnetically Ordered Insulators for Advanced Spintronics