Probing nonlinear spin dynamics in canted easy-plane antiferromagnets using spin-rectification effects
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arXiv
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| Autori principali: | , , , , , , , |
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| Natura: | Preprint |
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2024
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| _version_ | 1866913540291428352 |
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| author | Kanj, A. El Mantion, S. Boventer, I. Bortolotti, P. Cros, V. Anane, A. Gomonay, O. Lebrun, R. |
| author_facet | Kanj, A. El Mantion, S. Boventer, I. Bortolotti, P. Cros, V. Anane, A. Gomonay, O. Lebrun, R. |
| contents | We investigate spin-rectification phenomena in canted antiferromagnets, closely connected to the family of altermagnetic materials. Our results show that excitation efficiency is significantly enhanced by the Dzyaloshinskii-Moriya interaction. Antiferromagnetic dynamics can be detected through spin-Hall magnetoresistance and bolometric effects, with an efficiency reaching up to mV/W. The rectified voltage shape is influenced by both the symmetry of the exciting torques, detection mechanisms (continuous spin-pumping and spin-Hall magnetoresistance), and the antiferromagnetic crystalline axis. Under high pumping power, we observe a saturation effect related to Suhl-like spin-wave instabilities and a nonlinear redshift of the antiferromagnetic resonance. These findings open new avenues for studying nonlinear dynamics in antiferromagnetic and altermagnetic spintronic devices. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_08013 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Probing nonlinear spin dynamics in canted easy-plane antiferromagnets using spin-rectification effects Kanj, A. El Mantion, S. Boventer, I. Bortolotti, P. Cros, V. Anane, A. Gomonay, O. Lebrun, R. Mesoscale and Nanoscale Physics Materials Science Applied Physics We investigate spin-rectification phenomena in canted antiferromagnets, closely connected to the family of altermagnetic materials. Our results show that excitation efficiency is significantly enhanced by the Dzyaloshinskii-Moriya interaction. Antiferromagnetic dynamics can be detected through spin-Hall magnetoresistance and bolometric effects, with an efficiency reaching up to mV/W. The rectified voltage shape is influenced by both the symmetry of the exciting torques, detection mechanisms (continuous spin-pumping and spin-Hall magnetoresistance), and the antiferromagnetic crystalline axis. Under high pumping power, we observe a saturation effect related to Suhl-like spin-wave instabilities and a nonlinear redshift of the antiferromagnetic resonance. These findings open new avenues for studying nonlinear dynamics in antiferromagnetic and altermagnetic spintronic devices. |
| title | Probing nonlinear spin dynamics in canted easy-plane antiferromagnets using spin-rectification effects |
| topic | Mesoscale and Nanoscale Physics Materials Science Applied Physics |
| url | https://arxiv.org/abs/2410.08013 |