The browser you are using is not supported by this website. All versions of Internet Explorer are no longer supported, either by us or Microsoft (read more here: https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Please use a modern browser to fully experience our website, such as the newest versions of Edge, Chrome, Firefox or Safari etc.

Opening new exciting possibilities for the study of magnetic materials

Scientific illustration.
Schematic illustration of the principle of terahertz EPR ellipsometry. Terahertz light with a defined polarization is directed onto and reflected of a sample. Credit: Rindert et al

A new relation could be a valuable tool for gathering new insights into the magnetic excitations of semiconductors and other materials with magnetic properties. In the future, it could contribute to the advancement of various electronic devices and their underlying components.
“Our study provides a new fundamental relation in magneto-optics, particularly relevant for researchers working on antiferromagnetic and altermagnetic materials,” says Viktor Rindert, PhD student at NanoLund.

“While the exact direction is still evolving, our immediate focus is on applying the THz-GSE-EPR technique to study paramagnetic point defects in ultrawide band gap semiconductors,” says Viktor Rindert, who’s the author of the study together with Vanya Darakchieva, Tapati Sarkar, and Mathias Schubert.

“This research is particularly relevant for power electronics applications, where such materials are critical in enhancing performance and efficiency,” says Viktor Rindert.

Materials interact with electromagnetic fields in different ways, reflecting their structures and underlying properties. The Lyddane-Sachs-Teller relation is a physics construct that describes the relationship between a material’s static and dynamic dielectric constant (i.e., values indicating a system’s behavior in the presence or absence of an external electric field, respectively) and the vibrational modes of the material's crystal lattice (i.e., resonance frequencies).