Helimagnon Resonances in an Intrinsic Chiral Magnonic Crystal
We experimentally study magnetic resonances in the helical and conical magnetic phases of the chiral magnetic insulator Cu_{2}OSeO_{3} at the temperature T=5 K. Using a broadband microwave spectroscopy technique based on vector network analysis, we identify three distinct sets of helimagnon resonances in the frequency range 2 GHz≤f≤20 GHz with low magnetic damping α≤0.003. The extracted resonance frequencies are in accordance with calculations of the helimagnon band structure found in an intrinsic chiral magnonic crystal. The periodic modulation of the equilibrium spin direction that leads to the formation of the magnonic crystal is a direct consequence of the chiral magnetic ordering caused by the Dzyaloshinskii-Moriya interaction. The mode coupling in the magnonic crystal allows excitation of helimagnons with wave vectors that are multiples of the spiral wave vector.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2017 |
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| Erschienen: |
2017 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:119 |
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| Enthalten in: |
Physical review letters - 119(2017), 23 vom: 08. Dez., Seite 237204 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Weiler, Mathias [VerfasserIn] |
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| Anmerkungen: |
Date Completed 02.01.2018 Date Revised 02.01.2018 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1103/PhysRevLett.119.237204 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM279500963 |
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| 100 | 1 | |a Weiler, Mathias |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Helimagnon Resonances in an Intrinsic Chiral Magnonic Crystal |
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| 500 | |a Date Completed 02.01.2018 | ||
| 500 | |a Date Revised 02.01.2018 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a We experimentally study magnetic resonances in the helical and conical magnetic phases of the chiral magnetic insulator Cu_{2}OSeO_{3} at the temperature T=5 K. Using a broadband microwave spectroscopy technique based on vector network analysis, we identify three distinct sets of helimagnon resonances in the frequency range 2 GHz≤f≤20 GHz with low magnetic damping α≤0.003. The extracted resonance frequencies are in accordance with calculations of the helimagnon band structure found in an intrinsic chiral magnonic crystal. The periodic modulation of the equilibrium spin direction that leads to the formation of the magnonic crystal is a direct consequence of the chiral magnetic ordering caused by the Dzyaloshinskii-Moriya interaction. The mode coupling in the magnonic crystal allows excitation of helimagnons with wave vectors that are multiples of the spiral wave vector | ||
| 650 | 4 | |a Journal Article | |
| 700 | 1 | |a Aqeel, Aisha |e verfasserin |4 aut | |
| 700 | 1 | |a Mostovoy, Maxim |e verfasserin |4 aut | |
| 700 | 1 | |a Leonov, Andrey |e verfasserin |4 aut | |
| 700 | 1 | |a Geprägs, Stephan |e verfasserin |4 aut | |
| 700 | 1 | |a Gross, Rudolf |e verfasserin |4 aut | |
| 700 | 1 | |a Huebl, Hans |e verfasserin |4 aut | |
| 700 | 1 | |a Palstra, Thomas T M |e verfasserin |4 aut | |
| 700 | 1 | |a Goennenwein, Sebastian T B |e verfasserin |4 aut | |
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