Three-Dimensional Dynamics of a Magnetic Hopfion Driven by Spin Transfer Torque

Yizhou Liu, Wentao Hou, Xiufeng Han, and Jiadong Zang

Phys. Rev. Lett. 124, 127204 – Published 26 March 2020; Erratum Phys. Rev. Lett. 125, 159901 (2020)

Abstract

Magnetic hopfion is a three-dimensional (3D) topological soliton with novel spin structure that would enable exotic dynamics. Here, we study the current-driven 3D dynamics of a magnetic hopfion with a unit Hopf index in a frustrated magnet. Attributed to the spin Berry phase and symmetry of the hopfion, the phase space entangles multiple collective coordinates, thus the hopfion exhibits rich dynamics including longitudinal motion along the current direction, transverse motion perpendicular to the current direction, rotational motion, and dilation. Furthermore, the characteristics of hopfion dynamics is determined by the ratio between the nonadiabatic spin transfer torque parameter and the damping parameter. Such peculiar 3D dynamics of magnetic hopfion could shed light on understanding the universal physics of hopfions in different systems and boost the prosperous development of 3D spintronics.

Received 2 January 2020
Accepted 5 March 2020

DOI:https://doi.org/10.1103/PhysRevLett.124.127204

Physics Subject Headings (PhySH)

Frustrated magnetism Spin texture Spin transfer torque

Solitons

Condensed Matter, Materials & Applied Physics

Erratum

Erratum: Three-Dimensional Dynamics of a Magnetic Hopfion Driven by Spin Transfer Torque [Phys. Rev. Lett. 124, 127204 (2020)]

Yizhou Liu, Wentao Hou, Xiufeng Han, and Jiadong Zang

Phys. Rev. Lett. 125, 159901 (2020)

Authors & Affiliations

Yizhou Liu¹, Wentao Hou², Xiufeng Han^1,3,4,*, and Jiadong Zang^2,5,†

¹Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
²Department of Physics and Astronomy, University of New Hampshire, Durham, New Hampshire 03824, USA
³Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
⁴Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China
⁵Materials Science Program, University of New Hampshire, Durham, New Hampshire 03824, USA