Spin wave behavior and controlled switching of a novel non-trivial magnetic texture in Co/Pt nanodiscs
This work discusses the rich phase diagram of non-trivial, chiral magnetic textures/states in confined ultrathin nanodiscs of the ferromagnetic/heavy-metal bilayer. These magnetic textures are realized as a minimum-energy state during an external magnetic field sweep for a range of nanodisc’s diamet...
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2025-04-01
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| Series: | APL Materials |
| Online Access: | http://dx.doi.org/10.1063/5.0244538 |
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| author | Nimisha Arora Yogesh Kumar Pintu Das |
| author_facet | Nimisha Arora Yogesh Kumar Pintu Das |
| author_sort | Nimisha Arora |
| collection | DOAJ |
| description | This work discusses the rich phase diagram of non-trivial, chiral magnetic textures/states in confined ultrathin nanodiscs of the ferromagnetic/heavy-metal bilayer. These magnetic textures are realized as a minimum-energy state during an external magnetic field sweep for a range of nanodisc’s diameter. Our micromagnetic simulation-based investigation reveals a robust non-trivial “X” state among several other previously reported textures, which can be stabilized for a wide range of diameters and external magnetic fields. The underlying energetics behind the stabilization of this novel texture are examined. Furthermore, we have investigated the nature of radial and breathing spin wave modes excited in these magnetic textures via a temporal magnetic field pulse applied out-of-plane of the sample. Our studies reveal non-reciprocal spin wave modes excited exclusively in the non-trivial “X” state. Furthermore, a transformation of the non-trivial “X” state into an extended skyrmion within a few nanoseconds is demonstrated by applying an external sinusoidal magnetic field at the frequency of its eigen spin wave mode. We also show a clear correlation between the behavior of excited spin wave modes and the underlying magnetic textures tuned by varying external magnetic fields. |
| format | Article |
| id | doaj-art-9f41c63b52734dc28ce3733fb16f9da2 |
| institution | DOAJ |
| issn | 2166-532X |
| language | English |
| publishDate | 2025-04-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | APL Materials |
| spelling | doaj-art-9f41c63b52734dc28ce3733fb16f9da22025-08-20T03:11:02ZengAIP Publishing LLCAPL Materials2166-532X2025-04-01134041109041109-1210.1063/5.0244538Spin wave behavior and controlled switching of a novel non-trivial magnetic texture in Co/Pt nanodiscsNimisha Arora0Yogesh Kumar1Pintu Das2Department of Physics, Indian Institute of Technology Delhi, New Delhi 110016, IndiaDepartment of Physics, Indian Institute of Technology Delhi, New Delhi 110016, IndiaDepartment of Physics, Indian Institute of Technology Delhi, New Delhi 110016, IndiaThis work discusses the rich phase diagram of non-trivial, chiral magnetic textures/states in confined ultrathin nanodiscs of the ferromagnetic/heavy-metal bilayer. These magnetic textures are realized as a minimum-energy state during an external magnetic field sweep for a range of nanodisc’s diameter. Our micromagnetic simulation-based investigation reveals a robust non-trivial “X” state among several other previously reported textures, which can be stabilized for a wide range of diameters and external magnetic fields. The underlying energetics behind the stabilization of this novel texture are examined. Furthermore, we have investigated the nature of radial and breathing spin wave modes excited in these magnetic textures via a temporal magnetic field pulse applied out-of-plane of the sample. Our studies reveal non-reciprocal spin wave modes excited exclusively in the non-trivial “X” state. Furthermore, a transformation of the non-trivial “X” state into an extended skyrmion within a few nanoseconds is demonstrated by applying an external sinusoidal magnetic field at the frequency of its eigen spin wave mode. We also show a clear correlation between the behavior of excited spin wave modes and the underlying magnetic textures tuned by varying external magnetic fields.http://dx.doi.org/10.1063/5.0244538 |
| spellingShingle | Nimisha Arora Yogesh Kumar Pintu Das Spin wave behavior and controlled switching of a novel non-trivial magnetic texture in Co/Pt nanodiscs APL Materials |
| title | Spin wave behavior and controlled switching of a novel non-trivial magnetic texture in Co/Pt nanodiscs |
| title_full | Spin wave behavior and controlled switching of a novel non-trivial magnetic texture in Co/Pt nanodiscs |
| title_fullStr | Spin wave behavior and controlled switching of a novel non-trivial magnetic texture in Co/Pt nanodiscs |
| title_full_unstemmed | Spin wave behavior and controlled switching of a novel non-trivial magnetic texture in Co/Pt nanodiscs |
| title_short | Spin wave behavior and controlled switching of a novel non-trivial magnetic texture in Co/Pt nanodiscs |
| title_sort | spin wave behavior and controlled switching of a novel non trivial magnetic texture in co pt nanodiscs |
| url | http://dx.doi.org/10.1063/5.0244538 |
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