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| Main Authors: | , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2505.22559 |
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| _version_ | 1866916901784911872 |
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| author | Choe, Jeongheon Handa, Taketo Huang, Chun-Ying Liston, André Koch Cox, Jordan Stensberg, Jonathan Hong, Yongseok Chica, Daniel G. Xu, Ding Tay, Fuyang Husremovic, Samra Avelar, Vinicius da Silveira Lanza Arsenault, Eric A. Zhang, Zhuquan McIver, James Basov, Dmitri N. Delor, Milan Roy, Xavier Zhu, X. -Y. |
| author_facet | Choe, Jeongheon Handa, Taketo Huang, Chun-Ying Liston, André Koch Cox, Jordan Stensberg, Jonathan Hong, Yongseok Chica, Daniel G. Xu, Ding Tay, Fuyang Husremovic, Samra Avelar, Vinicius da Silveira Lanza Arsenault, Eric A. Zhang, Zhuquan McIver, James Basov, Dmitri N. Delor, Milan Roy, Xavier Zhu, X. -Y. |
| contents | Excitation of ordered quantum phases gives rise to collective modes and quasiparticles, as exemplified by spin waves and magnons emerging from magnetic order. Extending this paradigm to ferroelectric materials suggests the existence of polarization waves and their fundamental quanta, ferrons. Here, we report the generation and transport of polarization waves, i.e., coherent ferrons, in the van der Waals ferroelectric material NbOI2. Upon excitation by a short laser pulse, the polarization wave emits intense and narrow-band terahertz (THz) radiation at the ferroelectric transverse optical phonon frequency, modulates the ferroelectric order parameter, and propagates uniaxially along the polar axis at hypersonic velocities of ~105 m/s. These long-lived, uniaxial, and dipole-carrying polarization waves may find applications in narrow-band THz emission, ferronic information processing, and coherent electric control. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_22559 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Observation of Coherent Ferrons Choe, Jeongheon Handa, Taketo Huang, Chun-Ying Liston, André Koch Cox, Jordan Stensberg, Jonathan Hong, Yongseok Chica, Daniel G. Xu, Ding Tay, Fuyang Husremovic, Samra Avelar, Vinicius da Silveira Lanza Arsenault, Eric A. Zhang, Zhuquan McIver, James Basov, Dmitri N. Delor, Milan Roy, Xavier Zhu, X. -Y. Materials Science Applied Physics Optics Excitation of ordered quantum phases gives rise to collective modes and quasiparticles, as exemplified by spin waves and magnons emerging from magnetic order. Extending this paradigm to ferroelectric materials suggests the existence of polarization waves and their fundamental quanta, ferrons. Here, we report the generation and transport of polarization waves, i.e., coherent ferrons, in the van der Waals ferroelectric material NbOI2. Upon excitation by a short laser pulse, the polarization wave emits intense and narrow-band terahertz (THz) radiation at the ferroelectric transverse optical phonon frequency, modulates the ferroelectric order parameter, and propagates uniaxially along the polar axis at hypersonic velocities of ~105 m/s. These long-lived, uniaxial, and dipole-carrying polarization waves may find applications in narrow-band THz emission, ferronic information processing, and coherent electric control. |
| title | Observation of Coherent Ferrons |
| topic | Materials Science Applied Physics Optics |
| url | https://arxiv.org/abs/2505.22559 |