Chiral properties of topological-state loops

The angular momentum quantization of chiral gapless modes confined to a circularly shaped interface between two different topological phases is investigated. By examining several different setups, we show analytically that the angular momentum of the topological modes exhibits a highly chiral behavi...

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Veröffentlicht in:arXiv.org 2015-06
Hauptverfasser: Grujić, Marko M, Tadić, Milan Ž, Peeters, François M
Format: Artikel
Sprache:eng
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Zusammenfassung:The angular momentum quantization of chiral gapless modes confined to a circularly shaped interface between two different topological phases is investigated. By examining several different setups, we show analytically that the angular momentum of the topological modes exhibits a highly chiral behavior, and can be coupled to spin and/or valley degrees of freedom, reflecting the nature of the interface states. The energies and the magnetic moments corresponding to these states can be understood from a semiclassical picture. These loops can be viewed as building blocks for artificial magnets with tunable and highly diverse properties.
ISSN:2331-8422
DOI:10.48550/arxiv.1502.07476