High frequency dynamics modulated by collective magnetization reversal in artificial spin ice
arXiv:1710.10534 · doi:10.1103/PhysRevApplied.8.064026
Abstract
Spin-torque ferromagnetic resonance (ST-FMR) arises in heavy metal/ferromagnet heterostructures when an alternating charge current is passed through the bilayer stack. The methodology to detect the resonance is based on the anisotropic magnetoresistance, which is the change in the electrical resistance due to different orientations of the magnetization. In connected networks of ferromagnetic nanowires, known as artificial spin ice, the magnetoresistance is rather complex owing to the underlying collective behavior of the geometrically frustrated magnetic domain structure. Here, we demonstrate ST-FMR investigations in a square artificial spin-ice system and correlate our observations to magnetotransport measurements. The experimental findings are described using a simulation approach that highlights the importance of the correlated dynamics response of the magnetic system. Our results open the possibility of designing reconfigurable microwave oscillators and magnetoresistive devices based on connected networks of nanomagnets.
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Cited by in corpus (13)
- Sculpting the Spin-Wave Response of Artificial Spin Ice via Microstate Selection
- Ice-rule made manifold: phase transitions, topological defects and manifold restoration in two-dimensional artificial spin systems
- Observation of mode splitting in artificial spin ice
- Control of spin dynamics in artificial honeycomb spin-ice-based nanodisks
- Comparison of Spin-Wave Modes in Connected and Disconnected Artificial Spin Ice Nanostructures Using Brillouin Light Scattering Spectroscopy
- Current-Controlled Nanomagnetic Writing for Reconfigurable Magnonic Crystals
- Collective magnetization dynamics in nano-arrays of thin FePd discs
- Artificial Spin Ice: A Tutorial on Design and Control of Geometry, Microstate, Magnon Dynamics & Neuromorphic Computing
- Vertex Dependent Dynamic Response of a Connected Kagome Artificial Spin Ice
- Spin wave spectral probing of possible microstates in building-block of macroscopically degenerate artificial spin ice
- Thermal excitations within and among mesospins in artificial spin ice
- Modal frustration and periodicity breaking in artificial spin ice
- Controlling degeneracy and magnetization switching in an artificial spin ice system of peanut-shaped nanomagnets