Electromagnetic waves in canted magnets

Macedo, R. and Stamps, R. L. (2020) Electromagnetic waves in canted magnets. In: Donahue, M. (ed.) Compendium on Electromagnetic Analysis From Electrostatics to Photonics: Fundamentals and Applications for Physicists and Engineers. World Scientific, pp. 231-261. ISBN 9789813270268 (doi: 10.1142/9789813270268_0007)

Abstract

The optical properties of canted antiferromagnets are discussed from the perspective of magnetic polaritons and field tunable electromagnetic (EM) properties. Canted antiferromagnets have a weak magnetization. Their EM properties can be affected by externally applied magnetic fields as well as electric fields, if the material is multiferroic. A theoretical approach that is useful for describing the THz frequency EM response and properties of a large variety of canted spin systems is outlined here. The properties of two example systems are discussed: an antiferromagnet in which spin canting is induced through an externally applied magnetic field; and an antiferromagnetic multiferroic wherein the magnetic sublattices are canted through an internal coupling to a spontaneous dielectric polarization.

• Item Type: Book Sections
• Additional Information: The work of Rair Macêdo was supported by the Leverhulme Trust and the University of Glasgow through LKAS funds and Robert L. Stamps acknowledges the support of the Natural Sciences and Engineering Research Council of Canada (NSERC RGPIN 05011-18).
• Status: Published
• Glasgow Author(s) Enlighten ID: Stamps, Professor Robert and Macedo, Dr Rair
• Authors: Macedo, R., and Stamps, R. L.
• College/School: College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering; College of Science and Engineering > School of Physics and Astronomy
• Publisher: World Scientific
• ISBN: 9789813270268
• Copyright Holders: Copyright © 2020 by World Scientific Publishing Co. Pte. Ltd.
• Publisher Policy: Reproduced in accordance with the publisher copyright policy