Controlled Switching of the Number of Skyrmions in a Magnetic Nanodot by Electric Fields

Controlled Switching of the Number of Skyrmions in a Magnetic Nanodot by Electric Fields

© 2022 Wiley-VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 34(2022), 11 vom: 21. März, Seite e2107908
1. Verfasser: Hou, Zhipeng (VerfasserIn)
Weitere Verfasser: Wang, Yadong, Lan, Xiaoming, Li, Sai, Wan, Xuejin, Meng, Fei, Hu, Yangfan, Fan, Zhen, Feng, Chun, Qin, Minghui, Zeng, Min, Zhang, Xichao, Liu, Xiaoxi, Fu, Xuewen, Yu, Guanghua, Zhou, Guofu, Zhou, Yan, Zhao, Weisheng, Gao, Xingsen, Liu, Jun-Ming
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2022
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article electric fields low-power-consuming devices multi-state switching skyrmion clusters
Beschreibung
Zusammenfassung:© 2022 Wiley-VCH GmbH.
Magnetic skyrmions are topological swirling spin configurations that hold promise for building future magnetic memories and logic circuits. Skyrmionic devices typically rely on the electrical manipulation of a single skyrmion, but controllably manipulating a group of skyrmions can lead to more compact and memory-efficient devices. Here, an electric-field-driven cascading transition of skyrmion clusters in a nanostructured ferromagnetic/ferroelectric multiferroic heterostructure is reported, which allows a continuous multilevel transition of the number of skyrmions in a one-by-one manner. Most notably, the transition is non-volatile and reversible, which is crucial for multi-bit memory applications. Combined experiments and theoretical simulations reveal that the switching of skyrmion clusters is induced by the strain-mediated modification of both the interfacial Dzyaloshinskii-Moriya interaction and effective uniaxial anisotropy. The results not only open up a new direction for constructing low-power-consuming, non-volatile, and multi-bit skyrmionic devices, but also offer valuable insights into the fundamental physics underlying the voltage manipulation of skyrmion clusters
Beschreibung:Date Revised 17.03.2022
published: Print-Electronic
Citation Status PubMed-not-MEDLINE
ISSN:1521-4095
DOI:10.1002/adma.202107908