Driven gyrotropic skyrmion motion through steps in magnetic anisotropy

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Driven gyrotropic skyrmion motion through steps in magnetic anisotropy. / Zhou, Yifan; Mansell, Rhodri; van Dijken, Sebastiaan.

In: Scientific Reports, Vol. 9, No. 1, 6525, 25.04.2019, p. 1-7.

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@article{5d3ec2fb6f9a437bae46a59add40334f,
title = "Driven gyrotropic skyrmion motion through steps in magnetic anisotropy",
abstract = "The discovery of magnetic skyrmions in ultrathin heterostructures has led to great interest in possible applications in memory and logic devices. The non-trivial topology of magnetic skyrmions gives rise to a gyrotropic motion, where, under an applied energy gradient a skyrmion gains a component of motion perpendicular to the applied force. So far, device proposals have largely neglected this motion or treated it as a barrier to correct operation. Here, we show that skyrmions can be efficiently moved perpendicular to an energy step created by local changes in the perpendicular magnetic anisotropy. We propose an experimentally-realizable skyrmion racetrack device which uses voltage-controlled magnetic anisotropy to induce a step in magnetic anisotropy and drive a skyrmion unidirectionally using alternating voltage pulses.",
author = "Yifan Zhou and Rhodri Mansell and {van Dijken}, Sebastiaan",
year = "2019",
month = "4",
day = "25",
doi = "10.1038/s41598-019-42929-w",
language = "English",
volume = "9",
pages = "1--7",
journal = "Scientific Reports",
issn = "2045-2322",
number = "1",

}

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TY - JOUR

T1 - Driven gyrotropic skyrmion motion through steps in magnetic anisotropy

AU - Zhou, Yifan

AU - Mansell, Rhodri

AU - van Dijken, Sebastiaan

PY - 2019/4/25

Y1 - 2019/4/25

N2 - The discovery of magnetic skyrmions in ultrathin heterostructures has led to great interest in possible applications in memory and logic devices. The non-trivial topology of magnetic skyrmions gives rise to a gyrotropic motion, where, under an applied energy gradient a skyrmion gains a component of motion perpendicular to the applied force. So far, device proposals have largely neglected this motion or treated it as a barrier to correct operation. Here, we show that skyrmions can be efficiently moved perpendicular to an energy step created by local changes in the perpendicular magnetic anisotropy. We propose an experimentally-realizable skyrmion racetrack device which uses voltage-controlled magnetic anisotropy to induce a step in magnetic anisotropy and drive a skyrmion unidirectionally using alternating voltage pulses.

AB - The discovery of magnetic skyrmions in ultrathin heterostructures has led to great interest in possible applications in memory and logic devices. The non-trivial topology of magnetic skyrmions gives rise to a gyrotropic motion, where, under an applied energy gradient a skyrmion gains a component of motion perpendicular to the applied force. So far, device proposals have largely neglected this motion or treated it as a barrier to correct operation. Here, we show that skyrmions can be efficiently moved perpendicular to an energy step created by local changes in the perpendicular magnetic anisotropy. We propose an experimentally-realizable skyrmion racetrack device which uses voltage-controlled magnetic anisotropy to induce a step in magnetic anisotropy and drive a skyrmion unidirectionally using alternating voltage pulses.

UR - http://www.scopus.com/inward/record.url?scp=85064906262&partnerID=8YFLogxK

U2 - 10.1038/s41598-019-42929-w

DO - 10.1038/s41598-019-42929-w

M3 - Article

VL - 9

SP - 1

EP - 7

JO - Scientific Reports

JF - Scientific Reports

SN - 2045-2322

IS - 1

M1 - 6525

ER -

ID: 33936139