Chirality reversal of vortices induced by surface acoustic waves
We study the magnetization state and chirality change in the vortex nucleated in the Py disk array in the presence of the surface acoustic wave (SAW) through experiments and simulations. When the magnetic field sweeps across the disk, the presence of the SAW fundamental frequency helps the magnetiza...
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| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2025-01-01
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| Series: | APL Materials |
| Online Access: | http://dx.doi.org/10.1063/5.0245741 |
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| _version_ | 1832542709547532288 |
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| author | Shuai Mi Jinxuan Shi Huibo Liu Huiliang Wu Huifang Qiao Jianing Wang Jie Dong Xiaolei Li Jiangtao Xue Xiangqian Wang Jianbo Wang Qingfang Liu |
| author_facet | Shuai Mi Jinxuan Shi Huibo Liu Huiliang Wu Huifang Qiao Jianing Wang Jie Dong Xiaolei Li Jiangtao Xue Xiangqian Wang Jianbo Wang Qingfang Liu |
| author_sort | Shuai Mi |
| collection | DOAJ |
| description | We study the magnetization state and chirality change in the vortex nucleated in the Py disk array in the presence of the surface acoustic wave (SAW) through experiments and simulations. When the magnetic field sweeps across the disk, the presence of the SAW fundamental frequency helps the magnetization to change easily from the buckling to the vortex state. While with the help of the third and fifth harmonics of the acoustic fundamental frequency, besides the changes in magnetic state, some vortices also change their chirality. The reason for this change is that the spin–vorticity coupling induced by the SAW leads to a change in the macroscopic magnetic moment through angular momentum transfer between the mechanical and electron spins. Considering the spin–vorticity coupling equivalent field, called the Barnett field, we simulate the whole process of a vortex under a magnetic field with the help of SAW. The results show that in the presence of a Barnett field, the initial nucleation position and the nucleation process of the vortex are changed, which in turn causes the vortex chirality to change. This work provides ideas for manipulating specific magnetization states and promoting the application of the topological magnetic structure. |
| format | Article |
| id | doaj-art-35a8591058c04587bd0e19c2dbb91060 |
| institution | Kabale University |
| issn | 2166-532X |
| language | English |
| publishDate | 2025-01-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | APL Materials |
| spelling | doaj-art-35a8591058c04587bd0e19c2dbb910602025-02-03T16:42:31ZengAIP Publishing LLCAPL Materials2166-532X2025-01-01131011102011102-610.1063/5.0245741Chirality reversal of vortices induced by surface acoustic wavesShuai Mi0Jinxuan Shi1Huibo Liu2Huiliang Wu3Huifang Qiao4Jianing Wang5Jie Dong6Xiaolei Li7Jiangtao Xue8Xiangqian Wang9Jianbo Wang10Qingfang Liu11School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, People’s Republic of ChinaSchool of Physical Science and Technology, Lanzhou University, Lanzhou 730000, People’s Republic of ChinaSchool of Physical Science and Technology, Lanzhou University, Lanzhou 730000, People’s Republic of ChinaSchool of Physical Science and Technology, Lanzhou University, Lanzhou 730000, People’s Republic of ChinaSchool of Physical Science and Technology, Lanzhou University, Lanzhou 730000, People’s Republic of ChinaSchool of Physical Science and Technology, Lanzhou University, Lanzhou 730000, People’s Republic of ChinaSchool of Physical Science and Technology, Lanzhou University, Lanzhou 730000, People’s Republic of ChinaSchool of Physical Science and Technology, Lanzhou University, Lanzhou 730000, People’s Republic of ChinaSchool of Physical Science and Technology, Lanzhou University, Lanzhou 730000, People’s Republic of ChinaKey Laboratory of Sensor and Sensor Technology, Institute of Sensor Technology, Gansu Academy of Science, Lanzhou 730000, People’s Republic of ChinaSchool of Physical Science and Technology, Lanzhou University, Lanzhou 730000, People’s Republic of ChinaSchool of Physical Science and Technology, Lanzhou University, Lanzhou 730000, People’s Republic of ChinaWe study the magnetization state and chirality change in the vortex nucleated in the Py disk array in the presence of the surface acoustic wave (SAW) through experiments and simulations. When the magnetic field sweeps across the disk, the presence of the SAW fundamental frequency helps the magnetization to change easily from the buckling to the vortex state. While with the help of the third and fifth harmonics of the acoustic fundamental frequency, besides the changes in magnetic state, some vortices also change their chirality. The reason for this change is that the spin–vorticity coupling induced by the SAW leads to a change in the macroscopic magnetic moment through angular momentum transfer between the mechanical and electron spins. Considering the spin–vorticity coupling equivalent field, called the Barnett field, we simulate the whole process of a vortex under a magnetic field with the help of SAW. The results show that in the presence of a Barnett field, the initial nucleation position and the nucleation process of the vortex are changed, which in turn causes the vortex chirality to change. This work provides ideas for manipulating specific magnetization states and promoting the application of the topological magnetic structure.http://dx.doi.org/10.1063/5.0245741 |
| spellingShingle | Shuai Mi Jinxuan Shi Huibo Liu Huiliang Wu Huifang Qiao Jianing Wang Jie Dong Xiaolei Li Jiangtao Xue Xiangqian Wang Jianbo Wang Qingfang Liu Chirality reversal of vortices induced by surface acoustic waves APL Materials |
| title | Chirality reversal of vortices induced by surface acoustic waves |
| title_full | Chirality reversal of vortices induced by surface acoustic waves |
| title_fullStr | Chirality reversal of vortices induced by surface acoustic waves |
| title_full_unstemmed | Chirality reversal of vortices induced by surface acoustic waves |
| title_short | Chirality reversal of vortices induced by surface acoustic waves |
| title_sort | chirality reversal of vortices induced by surface acoustic waves |
| url | http://dx.doi.org/10.1063/5.0245741 |
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