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Titre
Electric Field Control of the Skyrmion Hall Effect in Piezoelectric-Magnetic Devices
Autor(es)
Sujet
Magnetism
Computational physics
Piezoelectric
Skyrmion
Strain
Clasificación UNESCO
2202 Electromagnetismo
Fecha de publicación
2021-10-20
Éditeur
American Physical Society (Nueva York, Estados Unidos)
Citación
Fattouhi, M., García-Sánchez, F., Yanes, R., Raposo, V., Martínez, E., Lopez-Diaz, L. (2021). Electric Field Control of the Skyrmion Hall Effect in Piezoelectric-Magnetic Devices. Phys. Rev. Applied 16, 044035
Resumen
[EN] Relying on both electromechanical and micromagnetic simulations, we propose a method to control the
trajectory of current-driven skyrmions using an electric field in hybrid piezoelectric-magnetic systems.
By applying a voltage between two lateral electrodes, a transverse strain gradient is created, as a result
of the nonuniform electric field profile in the piezoelectric material. Due to magnetoelastic coupling, this
transverse gradient leads to a lateral force on the skyrmions that can be used to suppress the skyrmion Hall
angle for any given current density, if a proper voltage is applied. We show that this method works under
realistic conditions, such as the presence of disorder in the ferromagnet, and that skyrmion trajectories can
be controlled with moderate voltages. Moreover, our method allows the maximum current density that
can be injected before the skyrmion is annihilated at the nanostrip edge to be increased, which leads to an
increase in the maximum achievable velocities.
URI
DOI
10.1103/PhysRevApplied.16.044035
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