Skyrmion motion induced by voltage-controlled in-plane strain gradients

Yanes, Rocío; García‐Sánchez, Felipe; Luís, Ricardo; Martínez, Eduardo; Raposo, V.; Torres, L.; López-Dı́az, L.

doi:10.1063/1.5119085

Cited by 46 publications

(23 citation statements)

References 44 publications

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“…3(b) confirms that the absence of WB revealed from the 1D model remains true (see Sec II.C Supp.Mat) [22] . Moreover, our simulations show that large DW velocities can be achieved using in-plane strain gradients under realistic conditions, especially if we take into account that, as shown in our previous publications [30,31], in-plane strain gradients in the order of 10 −2 µm −1 can be easily realized in hybrid ferromagnetic/piezoelectric devices by applying moderate voltages between conveniently located electrodes over the piezoelectric substrate.…”

supporting

confidence: 58%

Absence of Walker breakdown in the dynamics of chiral Neel domain walls driven by in-plane strain gradients

Fattouhi¹,

García-Sánchez²,

Yanes³

et al. 2022

Preprint

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We investigate theoretically the motion of chiral Néel domain walls in perpendicularly magnetized systems driven by in-plane strain gradients. We show that such strain drives domain walls efficiently towards increasing tensile (compressive) strain for positive (negative) magnetostrictive materials.During their motion a local damping torque that opposes the precessional torque due to the strain gradient arises. This torque prevents the onset of turbulent dynamics, and steady domain wall motion with constant velocity is asymptotically reached for any arbitrary large strain gradient.Withal, velocities in the range of 500 m/s can be obtained using voltage-induced strain under realistic conditions.

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supporting

confidence: 58%

Absence of Walker breakdown in the dynamics of chiral Neel domain walls driven by in-plane strain gradients

Fattouhi¹,

García-Sánchez²,

Yanes³

et al. 2022

Preprint

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“…Particularly interesting is the prospect of electric-field control of topologically protected magnetic skyrmions which, because of their small size and stability, are a promising candidate as information carrier in future spintronics devices. Micromagnetic simulations indicate that strain transfer between a piezoelectric layer and a thin ferromagnetic film with perpendicular magnetic anisotropy and interfacial Dzyaloshinskii-Moriya interaction facilitates electric-field-controlled nucleation and motion of magnetic skyrmions [ 270,271]. Experimental demonstrations of these phenomena are expected in the foreseeable future.…”

Section: Electric-field Control Of Magnetismmentioning

confidence: 99%

Roadmap on Magnetoelectric Materials and Devices

et al. 2021

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The possibility to tune the magnetic properties of materials with voltage (converse magnetoelectricity) or to generate electric voltage with magnetic fields (direct magnetoelectricity) has opened new avenues in a large variety of technological fields, ranging from information technologies to healthcare devices and including a great number of multifunctional integrated systems such as mechanical antennas, magnetometers, radiofrequency (RF) tunable inductors, etc., which have been realized due to the strong strainmediated magnetoelectric (ME) coupling found in ME composites. The development of singlephase multiferroic materials (which exhibit simultaneous ferroelectric and ferromagnetic or antiferromagnetic orders), multiferroic heterostructures, as well as progress in other ME mechanisms, such as electrostatic surface charging or magneto-ionics (voltage-driven ion migration) have a large potential to boost energy efficiency in spintronics and magnetic actuators. This paper focuses on existing ME materials and devices and reviews the state of the art in their

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“…Instead, a nondestructive HM/FM interfacial DMI modulation could be achieved via the strain-mediated electric-field control in all-solid-state heterostructures/devices. Strain-mediated electric-field-induced creation 28 , deletion, 29 and motion 30 of skyrmions have been computationally demonstrated.…”

Section: Introductionmentioning

confidence: 99%

Electric-field control of skyrmions in multiferroic heterostructure via magnetoelectric coupling

Zhuang

Zhang

et al. 2021

Nat Commun

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Room-temperature skyrmions in magnetic multilayers are considered to be promising candidates for the next-generation spintronic devices. Several approaches have been developed to control skyrmions, but they either cause significant heat dissipation or require ultrahigh electric fields near the breakdown threshold. Here, we demonstrate electric-field control of skyrmions through strain-mediated magnetoelectric coupling in ferromagnetic/ferroelectric multiferroic heterostructures. We show the process of non-volatile creation of multiple skyrmions, reversible deformation and annihilation of a single skyrmion by performing magnetic force microscopy with in situ electric fields. Strain-induced changes in perpendicular magnetic anisotropy and interfacial Dzyaloshinskii–Moriya interaction strength are characterized experimentally. These experimental results, together with micromagnetic simulations, demonstrate that strain-mediated magnetoelectric coupling (via strain-induced changes in both the perpendicular magnetic anisotropy and interfacial Dzyaloshinskii–Moriya interaction is responsible for the observed electric-field control of skyrmions. Our work provides a platform to investigate electric-field control of skyrmions in multiferroic heterostructures and paves the way towards more energy-efficient skyrmion-based spintronics.

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Skyrmion motion induced by voltage-controlled in-plane strain gradients

Cited by 46 publications

References 44 publications

Absence of Walker breakdown in the dynamics of chiral Neel domain walls driven by in-plane strain gradients

Absence of Walker breakdown in the dynamics of chiral Neel domain walls driven by in-plane strain gradients

Roadmap on Magnetoelectric Materials and Devices

Electric-field control of skyrmions in multiferroic heterostructure via magnetoelectric coupling

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