Light-field dressing of transient photo-excited states above $E_F$
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arXiv
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| Autori principali: | , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866912318150934528 |
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| author | Wang, Fei Chen, Wanying Bao, Changhua Lin, Tianyun Zhong, Haoyuan Zhang, Hongyun Zhou, Shuyun |
| author_facet | Wang, Fei Chen, Wanying Bao, Changhua Lin, Tianyun Zhong, Haoyuan Zhang, Hongyun Zhou, Shuyun |
| contents | Time-periodic light-field provides an emerging pathway for dynamically engineering quantum materials by forming hybrid states between photons and Bloch electrons. So far, experimental progress on light-field dressed states has been mainly focused on the occupied states, however, it is unclear if the transient photo-excited states above the Fermi energy $E_F$ can also be dressed, leaving the dynamical interplay between photo-excitation and light-field dressing elusive. Here, we provide direct experimental evidence for light-field dressing of the transient photo-excited surface states above $E_F$, which exhibits distinct dynamics with a delay response as compared to light-field dressed states below $E_F$. Our work reveals the dual roles of the pump pulse in both photo-excitation and light-field dressing, providing a more comprehensive picture with new insights on the light-induced manipulation of transient electronic states. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_06728 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Light-field dressing of transient photo-excited states above $E_F$ Wang, Fei Chen, Wanying Bao, Changhua Lin, Tianyun Zhong, Haoyuan Zhang, Hongyun Zhou, Shuyun Materials Science Time-periodic light-field provides an emerging pathway for dynamically engineering quantum materials by forming hybrid states between photons and Bloch electrons. So far, experimental progress on light-field dressed states has been mainly focused on the occupied states, however, it is unclear if the transient photo-excited states above the Fermi energy $E_F$ can also be dressed, leaving the dynamical interplay between photo-excitation and light-field dressing elusive. Here, we provide direct experimental evidence for light-field dressing of the transient photo-excited surface states above $E_F$, which exhibits distinct dynamics with a delay response as compared to light-field dressed states below $E_F$. Our work reveals the dual roles of the pump pulse in both photo-excitation and light-field dressing, providing a more comprehensive picture with new insights on the light-induced manipulation of transient electronic states. |
| title | Light-field dressing of transient photo-excited states above $E_F$ |
| topic | Materials Science |
| url | https://arxiv.org/abs/2504.06728 |