File format: "OriginPro" (OriginLab Corporation)
Data collected using the BWO-spectrometer "Epsilon" at the TU Wien
The file "fig_DA_spectra.opj" contains the frequency dependence of the directional anisotropy spectra. Given is the ratio of the transmission and the difference in phase shift in negative and positive magnetic fields on a logarithmic scale as observed experimentally and calculated theoretically. The sample is the magnetic GGG layer sandwiched between two layers of 2D split-ring arrays. The data were obtained in external magnetic fields of of B = 1.7, 2.5, and 2.7 T, respectively. The theoretical curves represent the Lorenztian fits to the data using Fresnel transmission expression for the plane-parallel sample sandwiched between two 2D layers.
The file "fig_DA_sweeps.opj" contains the magnetic field dependence of the directional anisotropy at different frequencies. Given is the ratio of transmission and the difference in phase shift in negative and positive magnetic fields in a logarithmic scale as observed experimentally and calculated theoreticaly. The sample is the magnetic GGG layer sandwiched between two layers of 2D split-ring arrays. The data were obtained at frequencies ω = 70, 68, 66, and 62 GHz, respectively. The theoretical curves represent the Lorenztian fits to the data using Fresnel transmission expression for the plane-parallel sample sandwiched between two 2D layers.
These are the data to the paper:
A. Kuzmenko, A. A. Mukhin , A. Shuvaev , A. Pimenov, and D. Szaller“Asymmetric absorption at custom wavelengths via a layered magnetoelectric window”Phys. Rev. B 112, 134434 (2025). https://doi.org/10.1103/tq6k-tkcc
Abstract: The controllable nonreciprocal propagation of light is an intensively investigated field of optics, with studies motivated both by fundamental questions and possible telecommunication applications. So far, polarizationindependent, switchable one-way transparency has been demonstrated only at certain resonances of multiferroiccrystals at cryogenic temperatures and in high magnetic fields, limiting the practical implementation of this effect. Here, as an alternative approach, we present the one-way transparency of an artificial layered structure consisting of split-ring metamaterial and magnetic substrate layers interacting in the dynamic regime. As evident from our quasioptical experiments in the GHz frequency range, this unique combination breaks time and space inversion symmetries in external magnetic field. The ease of tuning the dynamic response and the possibility of controllable one-way transparency make this approach promising for real-world applications.
