Abstract
In this chapter we study the basic concepts and properties of magnons in antiferromagnetic (AF) materials. Initially we present a brief introduction to AF materials and a semiclassical calculation of the equilibrium spin configuration in simple systems with two types of magnetic anisotropy: uniaxial and biaxial. Then we study the antiferromagnetic resonance and apply the results to three important AF insulators: MnF2, FeF2, and NiO. Finally, we present a quantum theory of magnons for these materials and compare the results with experimental data.
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CITATION STYLE
Rezende, S. M. (2020). Magnons in antiferromagnets. In Lecture Notes in Physics (Vol. 969, pp. 187–222). Springer. https://doi.org/10.1007/978-3-030-41317-0_5
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