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arXiv · 1803.08598

Voltage Control of Magnetic Monopoles in Artificial Spin Ice

Andres C. Chavez·Anthony Barra·Gregory P. Carman
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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.

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Andres C. Chavez, Anthony Barra, Gregory P. Carman. 2018-03-22. Voltage Control of Magnetic Monopoles in Artificial Spin Ice. https://doi.org/10.1088/1361-6463%2Faac0ae

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