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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2404.02503 |
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| _version_ | 1866913297248288768 |
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| author | Böckmann, Hannes Horstmann, Jan Gerrit Kurtz, Felix Buriks, Manuel Gadge, Karun Manmana, Salvatore R. Wippermann, Stefan Ropers, Claus |
| author_facet | Böckmann, Hannes Horstmann, Jan Gerrit Kurtz, Felix Buriks, Manuel Gadge, Karun Manmana, Salvatore R. Wippermann, Stefan Ropers, Claus |
| contents | Spatial heterogeneity and phase competition are hallmarks of strongly-correlated materials, promising tunable functionality on the nanoscale. Light-induced switching of a correlated insulator to a metallic state is well established. However, optical excitation generally lacks the specificity to select sub-wavelength domains and control final textures. Here, we employ valley-selective photodoping to drive the domain-specific quench of a textured Peierls insulator. Polarized excitation leverages the anisotropy of quasi-one-dimensional states at the correlated gap to initiate an insulator-to-metal transition with minimal electronic heating. We find that averting dissipation facilitates domain-specific carrier confinement, control over nanotextured phases, and a prolonged lifetime of the metastable metallic state. Complementing existing manipulation schemes, valley-selective photoexcitation will enable the activation of electronic phase separation beyond thermodynamic limitations, facilitating optically-controlled hidden states, engineered heterostructures, and polarization-sensitive percolation networks. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_02503 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Valley-controlled photoswitching of metal-insulator nanotextures Böckmann, Hannes Horstmann, Jan Gerrit Kurtz, Felix Buriks, Manuel Gadge, Karun Manmana, Salvatore R. Wippermann, Stefan Ropers, Claus Strongly Correlated Electrons Mesoscale and Nanoscale Physics Materials Science Spatial heterogeneity and phase competition are hallmarks of strongly-correlated materials, promising tunable functionality on the nanoscale. Light-induced switching of a correlated insulator to a metallic state is well established. However, optical excitation generally lacks the specificity to select sub-wavelength domains and control final textures. Here, we employ valley-selective photodoping to drive the domain-specific quench of a textured Peierls insulator. Polarized excitation leverages the anisotropy of quasi-one-dimensional states at the correlated gap to initiate an insulator-to-metal transition with minimal electronic heating. We find that averting dissipation facilitates domain-specific carrier confinement, control over nanotextured phases, and a prolonged lifetime of the metastable metallic state. Complementing existing manipulation schemes, valley-selective photoexcitation will enable the activation of electronic phase separation beyond thermodynamic limitations, facilitating optically-controlled hidden states, engineered heterostructures, and polarization-sensitive percolation networks. |
| title | Valley-controlled photoswitching of metal-insulator nanotextures |
| topic | Strongly Correlated Electrons Mesoscale and Nanoscale Physics Materials Science |
| url | https://arxiv.org/abs/2404.02503 |