Confined dipole and exchange spin waves in a bulk chiral magnet with Dzyaloshinskii-Moriya interaction
The Dzyaloshinskii-Moriya interaction (DMI) has an impact on excited spin waves in the chiral magnet Cu_{2}OSeO_{3} by means of introducing asymmetry in their dispersion relations. The confined eigenmodes of a chiral magnet are hence no longer the conventional standing spin waves. Here we report a c...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2021-07-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.3.033104 |
| _version_ | 1797210991507800064 |
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| author | Ping Che Ioannis Stasinopoulos Andrea Mucchietto Jianing Li Helmuth Berger Andreas Bauer Christian Pfleiderer Dirk Grundler |
| author_facet | Ping Che Ioannis Stasinopoulos Andrea Mucchietto Jianing Li Helmuth Berger Andreas Bauer Christian Pfleiderer Dirk Grundler |
| author_sort | Ping Che |
| collection | DOAJ |
| description | The Dzyaloshinskii-Moriya interaction (DMI) has an impact on excited spin waves in the chiral magnet Cu_{2}OSeO_{3} by means of introducing asymmetry in their dispersion relations. The confined eigenmodes of a chiral magnet are hence no longer the conventional standing spin waves. Here we report a combined experimental and micromagnetic modeling study by broadband microwave spectroscopy, and we observe confined spin waves up to eleventh order in bulk Cu_{2}OSeO_{3} in the field-polarized state. In micromagnetic simulations we find similarly rich spectra. They indicate the simultaneous excitation of both dipole- and exchange-dominated spin waves with wavelengths down to (47.2±0.05) nm attributed to the exchange interaction modulation. Our results suggest the DMI to be effective in creating exchange spin waves in a bulk sample without the challenging nanofabrication and thereby in exploring their scattering with noncollinear spin textures. |
| first_indexed | 2024-04-24T10:19:23Z |
| format | Article |
| id | doaj.art-60f8aeafd7b440cd957ce2784529fd96 |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:19:23Z |
| publishDate | 2021-07-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-60f8aeafd7b440cd957ce2784529fd962024-04-12T17:12:26ZengAmerican Physical SocietyPhysical Review Research2643-15642021-07-013303310410.1103/PhysRevResearch.3.033104Confined dipole and exchange spin waves in a bulk chiral magnet with Dzyaloshinskii-Moriya interactionPing CheIoannis StasinopoulosAndrea MucchiettoJianing LiHelmuth BergerAndreas BauerChristian PfleidererDirk GrundlerThe Dzyaloshinskii-Moriya interaction (DMI) has an impact on excited spin waves in the chiral magnet Cu_{2}OSeO_{3} by means of introducing asymmetry in their dispersion relations. The confined eigenmodes of a chiral magnet are hence no longer the conventional standing spin waves. Here we report a combined experimental and micromagnetic modeling study by broadband microwave spectroscopy, and we observe confined spin waves up to eleventh order in bulk Cu_{2}OSeO_{3} in the field-polarized state. In micromagnetic simulations we find similarly rich spectra. They indicate the simultaneous excitation of both dipole- and exchange-dominated spin waves with wavelengths down to (47.2±0.05) nm attributed to the exchange interaction modulation. Our results suggest the DMI to be effective in creating exchange spin waves in a bulk sample without the challenging nanofabrication and thereby in exploring their scattering with noncollinear spin textures.http://doi.org/10.1103/PhysRevResearch.3.033104 |
| spellingShingle | Ping Che Ioannis Stasinopoulos Andrea Mucchietto Jianing Li Helmuth Berger Andreas Bauer Christian Pfleiderer Dirk Grundler Confined dipole and exchange spin waves in a bulk chiral magnet with Dzyaloshinskii-Moriya interaction Physical Review Research |
| title | Confined dipole and exchange spin waves in a bulk chiral magnet with Dzyaloshinskii-Moriya interaction |
| title_full | Confined dipole and exchange spin waves in a bulk chiral magnet with Dzyaloshinskii-Moriya interaction |
| title_fullStr | Confined dipole and exchange spin waves in a bulk chiral magnet with Dzyaloshinskii-Moriya interaction |
| title_full_unstemmed | Confined dipole and exchange spin waves in a bulk chiral magnet with Dzyaloshinskii-Moriya interaction |
| title_short | Confined dipole and exchange spin waves in a bulk chiral magnet with Dzyaloshinskii-Moriya interaction |
| title_sort | confined dipole and exchange spin waves in a bulk chiral magnet with dzyaloshinskii moriya interaction |
| url | http://doi.org/10.1103/PhysRevResearch.3.033104 |
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