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Unconventional magnonic surface and interface states in layered ferromagnets

Zakeri, Khalil; Qin, Huajun; Ernst, Arthur

Abstract:
Electronic surface, interface and edge states are well-known concepts in low-dimensional solids and have already been utilised for practical applications. It is expected that magnons–the bosonic quasiparticles representing the magnetic excitations– shall also exhibit such exotic states. However, how these states are formed in layered magnetic structures is hitherto unknown. Here we bring the topic of magnonic surface and interface states in layered ferromagnets into discussion. We provide experimental examples of synthetic layered structures, supporting our discussions and show that these states can be tailored in artificially fabricated structures. We demonstrate that the magnonic surface or interface states may show peculiar features, including "standing” or "ultrafast” states. We argue that these states can drastically change their electronic and magnonic transport properties. In this way one can design layered ferromagnets which act as magnon conductor, semiconductor and insulator of specific states.

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Verlagsausgabe §
DOI: 10.5445/IR/1000131802
Veröffentlicht am 22.04.2021
Cover der Publikation
Zugehörige Institution(en) am KIT Physikalisches Institut (PHI)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 12.2021
Sprache Englisch
Identifikator ISSN: 2399-3650
KITopen-ID: 1000131802
Erschienen in Communications Physics
Verlag Nature Research
Band 4
Heft 1
Seiten Art. Nr.: 18
Vorab online veröffentlicht am 04.02.2021
Nachgewiesen in Web of Science
Scopus
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