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

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...

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Bibliographic Details
Published in:Journal of physics. D, Applied physics Vol. 50; no. 29
Main Authors: Garst, Markus, Waizner, Johannes, Grundler, Dirk
Format: Journal Article
Language:English
Published: IOP Publishing 30.06.2017
Subjects:
Dzyaloshinsky-Moriya interaction
ferrimagnet
ferromagnetic resonance
magnonics
skyrmion
spin wave
spintronics
ISSN:0022-3727, 1361-6463
Online Access:Get full text
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Summary: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.
Bibliography:JPhysD-112101.R1
ISSN:0022-3727
1361-6463
DOI:10.1088/1361-6463/aa7573