2013/03/19 by Masahito Mochizuki, S. Seki, Shinichiro Seki · 1 citation
Materials Science · Physics and Astronomy · #Magnetic properties of thin films #Metamaterials and Metasurfaces Applications #Multiferroics and related materials #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.87.134403
published as Phys. Rev. B 87, 134403 (2013) · 5 pages, 4 figures, accepted for publication in Phys. Rev. B
arxiv created 2013/03/19 · openalex publication_date 2013/04/03 · arxiv updated 2013/04/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We theoretically discover that unique eigenmodes of skyrmion crystal (SkX) are not only magnetically active to an ac magnetic field (\mathbitH^\ensuremathω) but also electrically active to an ac electric field (\mathbitE^\ensuremathω) in a multiferroic chiral-lattice magnet Cu2OSeO3, which amplifies the dynamical magnetoelectric coupling between \mathbitE^\ensuremathω and the spin texture. The resulting intense interference between their electric and their magnetic activation processes can lead to an unprecedentedly large diode effect on the microwave, i.e., its absorption by SkX changes up to \ensuremath∼20% when the incident direction is reversed. Our results demonstrate that the skyrmion could be a promising building block for microwave devices.