Electric field manipulation of spin chirality and skyrmion dynamic

Bingqian Dai, Di Wu, Seyed Armin Razavi, Shijie Xu, Haoran He, Qingyuan Shu, Malcolm Jackson, Farzad Mahfouzi, Hanshen Huang, Quanjun Pan, Yang Cheng, Tao Qu, Tianyi Wang, Lixuan Tai, Kin Wong, Nicholas Kioussis, Kang L. Wang

研究成果: Article同行評審

2 引文 斯高帕斯(Scopus)


The Dzyaloshinskii-Moriya interaction (DMI) is an antisymmetric exchange interaction that stabilizes spin chirality. One scientific and technological challenge is understanding and controlling the interaction between spin chirality and electric field. In this study, we investigate an unconventional electric field effect on interfacial DMI, skyrmion helicity, and skyrmion dynamics in a system with broken inversion symmetry. We design heterostructures with a 3d-5d atomic orbital interface to demonstrate the gate bias control of the DMI energy and thus transform the DMI between opposite chiralities. Furthermore, we use this voltage-controlled DMI (VCDMI) to manipulate the skyrmion spin texture. As a result, a type of intermediate skyrmion with a unique helicity is created, and its motion can be controlled and made to go straight. Our work shows the effective control of spin chirality, skyrmion helicity, and skyrmion dynamics by VCDMI. It promotes the emerging field of voltage-controlled chiral interactions and voltage-controlled skyrmionics.

期刊Science Advances
出版狀態Published - 2023 2月

All Science Journal Classification (ASJC) codes

  • 多學科