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Topological Magnons and Edge States in Antiferromagnetic Skyrmion Crystals

Díaz, Sebastián A. and Klinovaja, Jelena and Loss, Daniel. (2019) Topological Magnons and Edge States in Antiferromagnetic Skyrmion Crystals. Physical Review Letters, 122 (18). p. 187203.

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Official URL: https://edoc.unibas.ch/75404/

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Abstract

Antiferromagnetic skyrmion crystals are magnetic phases predicted to exist in antiferromagnets with Dzyaloshinskii-Moriya interactions. Their spatially periodic noncollinear magnetic texture gives rise to topological bulk magnon bands characterized by nonzero Chern numbers. We find topologically protected chiral magnonic edge states over a wide range of magnetic fields and Dzyaloshinskii-Moriya interaction values. Moreover, and of particular importance for experimental realizations, edge states appear at the lowest possible energies, namely, within the first bulk magnon gap. Thus, antiferromagnetic skyrmion crystals show great promise as novel platforms for topological magnonics.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Theoretische Physik Mesoscopics (Loss)
UniBasel Contributors:Loss, Daniel and Klinovaja, Jelena
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:American Physical Society
ISSN:0031-9007
e-ISSN:1079-7114
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:21 Apr 2020 10:07
Deposited On:05 Apr 2020 13:01

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