Extended Data Fig. 8: The circularly-polarized EL spectra of T-LED grown under 9 T magnetic fields.
From: Topology-induced chiral photon emission from a large-scale meron lattice
To further verify the contribution of meron lattice on the EL circular polarization, a new T-LED sample was fabricated under 9 T condition and measured in the forced ferromagnetic state under an external magnetic field of 0.4 T. a, The schematic diagram of circularly-polarized EL measurements under the forced ferromagnetic state. b, Room temperature circularly-polarized EL spectra of Pd/Fe/MgO/GaN-based blue T-LED without magnetization, and with backward (0.4 T) perpendicular magnetization, respectively. The degree of EL circular polarization of the new 9 T sample was 20.5% without an applied magnetic field, and decreased to 5.4% under a backward perpendicular magnetic field of 0.4 T.
