Fig. 3: Electric field control of magnonics based on the controllable magnetic and polar texture.
From: Non-volatile magnon transport in a single domain multiferroic
a–f, g–l, and m–s SHG-linear dichroism polar maps, iso-B NV images, and corresponding schematic for devices [010], [100] and \([\bar{1}10]\). SHG (for in-plane polarization) and iso-B NV (for spin magnetic texture) are recorded for two opposite poling directions. Dark arrows represent the direction of the electric field and gray arrows show the polarization direction in specific domains. The gray (Pt) pads are used for the application of an in-plane electric field. The solid arrows indicate the direction of the applied electric field. The stripe patterns in NV images are indicative of the canonical spin cycloid as observed in previous studies18, 26, 38. The line scans on the iso-B NV images (Supplementary Information Fig. 19) show that the period does not change appreciably after electric field switching in a single domain region. The opposite poled NV images were recorded on different devices. Schematics highlight the relationship between the polarization P and spin cycloid propagation direction k deduced from NV measurements (Also see Supplementary Information Fig. 20). The scale bar in NV images is 500 nm.
