Magnetic skyrmionium diode with a magnetic anisotropy voltage gating

Junlin Wang, Jing Xia, Xichao Zhang, Xiangyu Zheng, Guanqi Li, Li Chen, Yan Zhou, Jing Wu, Haihong Yin, Roy William Chantrell, Yongbing Xu

Research output: Contribution to journalArticlepeer-review


The magnetic skyrmionium can be seen as a coalition of two magnetic skyrmions with opposite topological charges and has potential applications in next-generation spintronic devices. Here, we report the current-driven dynamics of a skyrmionium in a ferromagnetic nanotrack with the voltage-controlled magnetic anisotropy. The pinning and depinning of a skyrmionium controlled by the voltage gate are investigated. The current-driven skyrmionium can be used to mimic the skyrmionium diode effect in the nanotrack with a voltage gate. We have further studied the skyrmionium dynamics in the nanotrack driven by a magnetic anisotropy gradient in the absence of spin current. The performance of a single wedge-shaped voltage gate at different temperatures is studied. Our results may provide useful guidelines for the design of voltage-controlled and skyrmionium-based spintronic devices.
Original languageEnglish
Article number202401
Number of pages7
JournalApplied Physics Letters
Issue number20
Publication statusPublished - 17 Nov 2020

Bibliographical note

© 2020, AIP Publishing. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details.

Cite this