Rich magnon topology in triangular lattice magnets
The two-dimensional magnet has been an emerging and rapidly growing field. The nontrivial topological phenomenon in these materials is an attracting subject. Yet, the realization of such magnets exhibiting topological magnons remains a challenge. Here, employing the linear spin-wave theory and the f...
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Published in | Journal of physics. Condensed matter Vol. 36; no. 50; pp. 505302 - 505309 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
England
IOP Publishing
18.09.2024
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Subjects | |
Online Access | Get full text |
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Summary: | The two-dimensional magnet has been an emerging and rapidly growing field. The nontrivial topological phenomenon in these materials is an attracting subject. Yet, the realization of such magnets exhibiting topological magnons remains a challenge. Here, employing the linear spin-wave theory and the first-principles calculations, we propose that variety of topological phases exist in the triangular ferromagnet. These include magnon Chern insulators and high-order topological insulators. Interestingly, these topological states can coexist within a certain parameter space, leading to a hybrid topological state. We propose that these topological phases can be realized via atomic substitutions inMnSe2orMnTe2single-layers. The following detailed analysis suggests that non-uniform Dzyaloshinsky-Moriya interactions are crucial in achieving topological magnons. Our work unveil a unique approach to obtaining non-trivial topological magnons in two-dimensional materials. |
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Bibliography: | JPCM-123646.R1 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0953-8984 1361-648X 1361-648X |
DOI: | 10.1088/1361-648X/ad7805 |