1. Voltage control of magnetic monopoles in artificial spin ice
- Author
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Andres C. Chavez, Anthony Barra, and Gregory P. Carman
- Subjects
Acoustics and Ultrasonics ,Magnetic monopole ,FOS: Physical sciences ,Applied Physics (physics.app-ph) ,02 engineering and technology ,01 natural sciences ,Condensed Matter::Materials Science ,Magnetization ,Lattice (order) ,Mesoscale and Nanoscale Physics (cond-mat.mes-hall) ,0103 physical sciences ,010306 general physics ,Physics ,Condensed Matter - Mesoscale and Nanoscale Physics ,Condensed matter physics ,Physics - Applied Physics ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,Ferromagnetic resonance ,Piezoelectricity ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials ,Magnetic field ,Spin ice ,0210 nano-technology ,Voltage - Abstract
Current research on artificial spin ice (ASI) systems has revealed unique hysteretic memory effects and mobile quasi-particle monopoles controlled by externally applied magnetic fields. Here, we numerically demonstrate a strain-mediated multiferroic approach to locally control the ASI monopoles. The magnetization of individual lattice elements is controlled by applying voltage pulses to the piezoelectric layer resulting in strain-induced magnetic precession timed for 180 degree reorientation. The model demonstrates localized voltage control to move the magnetic monopoles across lattice sites, in CoFeB, Ni, and FeGa based ASI$'$s. The switching is achieved at frequencies near ferromagnetic resonance and requires energies below 620 aJ. The results demonstrate that ASI monopoles can be efficiently and locally controlled with a strain-mediated multiferroic approach.
- Published
- 2018
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