Observation and Control of Chiral Spin Frustration in BiYIG Thin Films
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| Main Authors: | , , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866909731887513600 |
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| author | Wang, Jinlong Wang, Hanchen Xu, Zhewen Bassant, Artim L. Hu, Junfeng Song, Wenjie Li, Chaozhong Meng, Xiangrui Zhao, Mengqi Liu, Song Chai, Guozhi Gao, Peng Jiang, Wanjun Xue, Desheng Yu, Dapeng Legrand, William Degen, Christian L. Duine, Rembert A. Gambardella, Pietro Yu, Haiming |
| author_facet | Wang, Jinlong Wang, Hanchen Xu, Zhewen Bassant, Artim L. Hu, Junfeng Song, Wenjie Li, Chaozhong Meng, Xiangrui Zhao, Mengqi Liu, Song Chai, Guozhi Gao, Peng Jiang, Wanjun Xue, Desheng Yu, Dapeng Legrand, William Degen, Christian L. Duine, Rembert A. Gambardella, Pietro Yu, Haiming |
| contents | Chiral interactions within magnetic layers stabilize the formation of noncollinear spin textures, which can be leveraged to design devices with tailored magnetization dynamics. Here, we introduce chiral spin frustration in which energetically degenerate magnetic states frustrate the Dzyaloshinskii-Moriya interaction. We demonstrate magnon-driven switching of the chirally frustrated spin states in Bi-substituted yttrium iron garnet thin films. These states are defined by an in-plane macrospin neighboring two out-ofplane spins on either side with opposing chirality. Using scanning nitrogen-vacancy magnetometry and spin pumping, we identified four degenerate frustrated states and achieved their controllable switching via magnon spin torque. Crucially, the switching is unidirectional, with selectivity determined by the incoming magnon direction. This mechanism provides a powerful approach to manipulate frustrated spin states with magnons. Chiral spin frustration unlocks the geometry constraints of conventional frustration, and therefore opens new horizons for frustrated magnetism, paving the way for energy-efficient spintronic devices based on frustratio |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_06858 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Observation and Control of Chiral Spin Frustration in BiYIG Thin Films Wang, Jinlong Wang, Hanchen Xu, Zhewen Bassant, Artim L. Hu, Junfeng Song, Wenjie Li, Chaozhong Meng, Xiangrui Zhao, Mengqi Liu, Song Chai, Guozhi Gao, Peng Jiang, Wanjun Xue, Desheng Yu, Dapeng Legrand, William Degen, Christian L. Duine, Rembert A. Gambardella, Pietro Yu, Haiming Mesoscale and Nanoscale Physics Applied Physics Chiral interactions within magnetic layers stabilize the formation of noncollinear spin textures, which can be leveraged to design devices with tailored magnetization dynamics. Here, we introduce chiral spin frustration in which energetically degenerate magnetic states frustrate the Dzyaloshinskii-Moriya interaction. We demonstrate magnon-driven switching of the chirally frustrated spin states in Bi-substituted yttrium iron garnet thin films. These states are defined by an in-plane macrospin neighboring two out-ofplane spins on either side with opposing chirality. Using scanning nitrogen-vacancy magnetometry and spin pumping, we identified four degenerate frustrated states and achieved their controllable switching via magnon spin torque. Crucially, the switching is unidirectional, with selectivity determined by the incoming magnon direction. This mechanism provides a powerful approach to manipulate frustrated spin states with magnons. Chiral spin frustration unlocks the geometry constraints of conventional frustration, and therefore opens new horizons for frustrated magnetism, paving the way for energy-efficient spintronic devices based on frustratio |
| title | Observation and Control of Chiral Spin Frustration in BiYIG Thin Films |
| topic | Mesoscale and Nanoscale Physics Applied Physics |
| url | https://arxiv.org/abs/2508.06858 |