2017/11/24 by Weichao Yu, Jin Lan, Jiang Xiao · 55 citations
Chemistry · Engineering · Physics and Astronomy · #Antiferromagnetism #Chemistry #Circular polarization #Condensed matter physics #Domain wall (magnetism) #Electron #Excitation #Ferromagnetism #Magnetic domain #Magnetic field #Magnetic properties of thin films #Magnetization #Magneto-Optical Properties and Applications #Physics #Physics of Superconductivity and Magnetism #Polarization (electrochemistry) #Quantum mechanics #Spin polarization #Spin wave #cond-mat.mes-hall #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevb.98.144422
published in Physical review. B./Physical review. B 98(14) (American Physical Society) · 5 pages, 4 figures
arxiv created 2017/11/24 · openalex created_date 2017/12/04 · openalex publication_date 2018/10/15 · arxiv updated 2018/10/18 · openalex updated_date 2026/08/05
The control of magnetic domain walls is essential for magnetic-based memory and logic applications. As an elementary excitation of magnetic order, a spin wave is capable of moving magnetic domain walls just like a conducting electric current. Ferromagnetic spin waves can only be right-circularly polarized. In contrast, antiferromagnetic spin waves have full polarization degrees of freedom, including both left- and right-circular polarizations, as well as all possible linear or elliptical ones. Here we demonstrate that, due to the Dzyaloshinskii-Moriya interaction, the spin wave driven domain-wall motion in antiferromagnets strongly depends on the linear polarization direction of the injected spin waves. Steering domain-wall motion by simply tuning the polarization of spin waves offers new design principles for domain-wall based information processing devices.