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Electric-field-driven non-volatile multi-state switching of individual skyrmions in a multiferroic heterostructure.


ABSTRACT: Electrical manipulation of skyrmions attracts considerable attention for its rich physics and promising applications. To date, such a manipulation is realized mainly via spin-polarized current based on spin-transfer torque or spin-orbital torque effect. However, this scheme is energy consuming and may produce massive Joule heating. To reduce energy dissipation and risk of heightened temperatures of skyrmion-based devices, an effective solution is to use electric field instead of current as stimulus. Here, we realize an electric-field manipulation of skyrmions in a nanostructured ferromagnetic/ferroelectrical heterostructure at room temperature via an inverse magneto-mechanical effect. Intriguingly, such a manipulation is non-volatile and exhibits a multistate feature. Numerical simulations indicate that the electric-field manipulation of skyrmions originates from strain-mediated modification of effective magnetic anisotropy and Dzyaloshinskii-Moriya interaction. Our results open a direction for constructing low-energy-dissipation, non-volatile, and multistate skyrmion-based spintronic devices.

SUBMITTER: Wang Y 

PROVIDER: S-EPMC7367868 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature

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Electric-field-driven non-volatile multi-state switching of individual skyrmions in a multiferroic heterostructure.

Wang Yadong Y   Wang Lei L   Xia Jing J   Lai Zhengxun Z   Tian Guo G   Zhang Xichao X   Hou Zhipeng Z   Gao Xingsen X   Mi Wenbo W   Feng Chun C   Zeng Min M   Zhou Guofu G   Yu Guanghua G   Wu Guangheng G   Zhou Yan Y   Wang Wenhong W   Zhang Xi-Xiang XX   Liu Junming J  

Nature communications 20200717 1


Electrical manipulation of skyrmions attracts considerable attention for its rich physics and promising applications. To date, such a manipulation is realized mainly via spin-polarized current based on spin-transfer torque or spin-orbital torque effect. However, this scheme is energy consuming and may produce massive Joule heating. To reduce energy dissipation and risk of heightened temperatures of skyrmion-based devices, an effective solution is to use electric field instead of current as stimu  ...[more]

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