Model for a collimated spin wave beam generated by a single layer, spin torque nanocontact
arXiv:0710.2890 · doi:10.1103/PhysRevB.77.144401
Abstract
A model of spin torque induced magnetization dynamics based upon semi-classical spin diffusion theory for a single layer nanocontact is presented. The model incorporates effects due to the current induced Oersted field and predicts the generation of a variety of spatially dependent, coherent, precessional magnetic wave structures. Directionally controllable collimated spin wave beams, vortex spiral waves, and localized standing waves are found to be excited by the interplay of the Oersted field and the orientation of an applied field. These fields act as a spin wave ``corral'' around the nanocontact that controls the propagation of spin waves in certain directions.
19 pages, 8 figures; added content, figure, and more references
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Cited by in corpus (18)
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- Theory for a dissipative droplet soliton excited by a spin torque nanocontact
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- Spin wave mode coexistence on the nano-scale: A consequence of the Oersted field induced asymmetric energy landscape
- Graphene-based electronic spin lenses
- Direct observation and imaging of a spin-wave soliton with like symmetry
- Direct Observation of Large Amplitude Spin Excitations Localized in a Spin-Transfer Nanocontact
- Propagation and control of nano-scale, magnetic droplet solitons
- Self-consistent calculation of spin transport and magnetization dynamics
- Spin wave excitation patterns generated by spin torque oscillators
- Magnetic Droplet Soliton Nucleation in Oblique Fields
- Scalable synchronization of spin-Hall oscillators in out-of-plane field
- Impact of intra-grain spin wave reflections on nano-contact spin torque oscillators
- Thermal Activation Barriers for Creation and Annihilation of Magnetic Droplet Solitons in the Presence of Spin Transfer Torque
- Current induced multi-mode propagating spin waves in a spin transfer torque nano-contact with strong perpendicular magnetic anisotropy
- Magnetoelastic Coupling and Possibility of Spintronic Electromagnetomechanical Effects
- Spin-Torque and Spin-Hall Nano-Oscillators