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Collective spin excitations of helices and magnetic skyrmions: review and perspectives of magnonics in non-centrosymmetric magnets

Type of publication Peer-reviewed
Publikationsform Original article (peer-reviewed)
Author Garst Markus, Waizner Johannes, Grundler Dirk,
Project Discovery and Nanoengineering of Novel Skyrmion-hosting Materials
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Original article (peer-reviewed)

Journal Journal of Physics D: Applied Physics
Volume (Issue) 50(29)
Page(s) 293002 - 293002
Title of proceedings Journal of Physics D: Applied Physics
DOI 10.1088/1361-6463/aa7573

Open Access

URL http://doi.org/10.1088/1361-6463/aa7573
Type of Open Access Publisher (Gold Open Access)

Abstract

Magnetic materials hosting correlated electrons play an important role for information technology and signal processing. The currently used ferro-, ferri- and antiferromagnetic materials provide microscopic moments (spins) that are mainly collinear. Recently more complex spin structures such as spin helices and cycloids have regained a lot of interest. The interest has been initiated by the discovery of the skyrmion lattice phase in non-centrosymmetric helical magnets. In this review we address how spin helices and skyrmion lattices enrich the microwave characteristics of magnetic materials and give rise to bottom-up magnonic crystals. When discussing perspectives for microwave electronics and magnonics we focus particularly on insulating materials as they avoid eddy current losses, offer low spin-wave damping, and allow for electric field control. Thereby, they further fuel the vision of magnonics operated at low energy consumption.
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