Ultrafast photoinduced phase transition in the antiferromagnetic Dirac semimetal EuAgAs
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arXiv
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| Format: | Preprint |
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2024
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| author | Liu, Hao Zhang, Chen Wu, Qi-Yi Jin, Yahui Zhu, Ziming Song, Jiao-Jiao Cui, Sheng-Tao Sun, Zhe Wang, Honghong Chen, Bo He, Jun Liu, Hai-Yun Duan, Yu-Xia Oppeneer, Peter M. Meng, Jian-Qiao |
| author_facet | Liu, Hao Zhang, Chen Wu, Qi-Yi Jin, Yahui Zhu, Ziming Song, Jiao-Jiao Cui, Sheng-Tao Sun, Zhe Wang, Honghong Chen, Bo He, Jun Liu, Hai-Yun Duan, Yu-Xia Oppeneer, Peter M. Meng, Jian-Qiao |
| contents | We report the observation of a light-induced subpicosecond phase transition in the antiferromagnetic Dirac semimetal EuAgAs, achieved through ultrafast optical excitation. Using ultrafast optical spectroscopy, we probe the nonequilibrium carrier dynamics, discovering distinct fluence-dependent responses in the antiferromagnetic and paramagnetic states, and revealing a possible magnetic order-driven transition between different topological states. Our results demonstrate that EuAgAs, with its highly tunable magnetic structure, possibly offers a unique platform for exploring topological phase transitions. These results underscore the potential of ultrashort optical pulses as powerful tools for the real-time control of topological phases, opening pathways for advances in spintronics, quantum computing, and energy-efficient information technologies. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_10756 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Ultrafast photoinduced phase transition in the antiferromagnetic Dirac semimetal EuAgAs Liu, Hao Zhang, Chen Wu, Qi-Yi Jin, Yahui Zhu, Ziming Song, Jiao-Jiao Cui, Sheng-Tao Sun, Zhe Wang, Honghong Chen, Bo He, Jun Liu, Hai-Yun Duan, Yu-Xia Oppeneer, Peter M. Meng, Jian-Qiao Strongly Correlated Electrons Materials Science We report the observation of a light-induced subpicosecond phase transition in the antiferromagnetic Dirac semimetal EuAgAs, achieved through ultrafast optical excitation. Using ultrafast optical spectroscopy, we probe the nonequilibrium carrier dynamics, discovering distinct fluence-dependent responses in the antiferromagnetic and paramagnetic states, and revealing a possible magnetic order-driven transition between different topological states. Our results demonstrate that EuAgAs, with its highly tunable magnetic structure, possibly offers a unique platform for exploring topological phase transitions. These results underscore the potential of ultrashort optical pulses as powerful tools for the real-time control of topological phases, opening pathways for advances in spintronics, quantum computing, and energy-efficient information technologies. |
| title | Ultrafast photoinduced phase transition in the antiferromagnetic Dirac semimetal EuAgAs |
| topic | Strongly Correlated Electrons Materials Science |
| url | https://arxiv.org/abs/2411.10756 |