Equilibrium non-linear phononics by electric field fluctuations of terahertz cavities
Fuente:
arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866917973349892096 |
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| author | Boström, Emil Viñas Michael, Marios H. Eckhardt, Christian Rubio, Angel |
| author_facet | Boström, Emil Viñas Michael, Marios H. Eckhardt, Christian Rubio, Angel |
| contents | Selective excitation of vibrational modes using strong laser pulses has emerged as a powerful material engineering paradigm. However, to realize deterministic control over material properties for device applications, it is desirable to have an analogous scheme without a drive, operating in thermal equilibrium. We here propose such an equilibrium analog of the light-driven paradigm, leveraging the strong coupling between lattice degrees of freedom and the quantum fluctuations of the electric field of a THz micro-cavity. We demonstrate this approach by showing, using ab initio data, how electric field fluctuations can induce a sub-dominant ferromagnetic order, on top of the dominant zig-zag antiferromagnet order, in FePS$_3$ close to its Néel temperature. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_19063 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Equilibrium non-linear phononics by electric field fluctuations of terahertz cavities Boström, Emil Viñas Michael, Marios H. Eckhardt, Christian Rubio, Angel Materials Science Mesoscale and Nanoscale Physics Selective excitation of vibrational modes using strong laser pulses has emerged as a powerful material engineering paradigm. However, to realize deterministic control over material properties for device applications, it is desirable to have an analogous scheme without a drive, operating in thermal equilibrium. We here propose such an equilibrium analog of the light-driven paradigm, leveraging the strong coupling between lattice degrees of freedom and the quantum fluctuations of the electric field of a THz micro-cavity. We demonstrate this approach by showing, using ab initio data, how electric field fluctuations can induce a sub-dominant ferromagnetic order, on top of the dominant zig-zag antiferromagnet order, in FePS$_3$ close to its Néel temperature. |
| title | Equilibrium non-linear phononics by electric field fluctuations of terahertz cavities |
| topic | Materials Science Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2409.19063 |