Laser-enhanced magnetism in SmFeO$_3$
Fuente:
arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2023
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| Accesso online: | |
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| _version_ | 1866910483104137216 |
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| author | Yarmohammadi, Mohsen Bukov, Marin Oganesyan, Vadim Kolodrubetz, Michael H. |
| author_facet | Yarmohammadi, Mohsen Bukov, Marin Oganesyan, Vadim Kolodrubetz, Michael H. |
| contents | To coherently enhance inherent weak magnetic interactions in rare-earth orthoferrite SmFeO$_3$ as a functional material for spintronic applications, we simulate the dissipative spin dynamics that are linearly and quadratically coupled to laser-driven infrared-active phonons. When linear coupling dominates, we discover a magnetophononic dynamical first-order phase transition in the nonequilibrium steady state which can inhibit strong enhancement of magnetic interactions. By contrast, when quadratic spin-phonon coupling dominates, no phase transition exists at experimentally relevant parameters. By utilizing a chirp protocol, the phase transition can be engineered, enabling stronger magnetic interactions. We also discuss the route for experimental observation of our results. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2308_14939 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Laser-enhanced magnetism in SmFeO$_3$ Yarmohammadi, Mohsen Bukov, Marin Oganesyan, Vadim Kolodrubetz, Michael H. Materials Science To coherently enhance inherent weak magnetic interactions in rare-earth orthoferrite SmFeO$_3$ as a functional material for spintronic applications, we simulate the dissipative spin dynamics that are linearly and quadratically coupled to laser-driven infrared-active phonons. When linear coupling dominates, we discover a magnetophononic dynamical first-order phase transition in the nonequilibrium steady state which can inhibit strong enhancement of magnetic interactions. By contrast, when quadratic spin-phonon coupling dominates, no phase transition exists at experimentally relevant parameters. By utilizing a chirp protocol, the phase transition can be engineered, enabling stronger magnetic interactions. We also discuss the route for experimental observation of our results. |
| title | Laser-enhanced magnetism in SmFeO$_3$ |
| topic | Materials Science |
| url | https://arxiv.org/abs/2308.14939 |