Dimensionality reduction of optically generated vortex strings in a charge density wave
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arXiv
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| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866912584539570176 |
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| author | Dahal, Sajal Miller, Alex H. Krapivin, Viktor Orenstein, Gal Duncan, Ryan A. Leonard, Nicholas Hurley, Matthew J. Stanton, Jade Mankowsky, Roman Lemke, Henrik Singh, Anisha Fisher, Ian Trigo, Mariano Teitelbaum, Samuel W. |
| author_facet | Dahal, Sajal Miller, Alex H. Krapivin, Viktor Orenstein, Gal Duncan, Ryan A. Leonard, Nicholas Hurley, Matthew J. Stanton, Jade Mankowsky, Roman Lemke, Henrik Singh, Anisha Fisher, Ian Trigo, Mariano Teitelbaum, Samuel W. |
| contents | In phase transitions, mesoscale structures such as topological defects, vortex strings, and domain walls control the path towards equilibrium, and thus the functional properties of many active devices. In photoinduced phase transitions driven by femtosecond laser excitation, the temporal (pulse duration) and spatial (penetration depth) structure of the optical excitation present opportunities for control and creating structures with unique topologies. By performing time-resolved optical pump, x-ray probe experiments on the CDW system Pd-intercalated ErTe$_{3}$, we gain access to the nanoscale dynamics of the mesoscale topological features (vortex strings) produced after a quench, which have a different apparent dimensionality than the topological defects predicted from the bulk system. We show that these vortex strings persist for much longer than the electronic recovery time. The critical exponent obtained from power-law scaling of the intensity as a function of wavevector shows a reduction in the effective dimensionality of the topological defects in the system, corroborated by time-dependent Ginzburg-Landau simulations. Our results demonstrate a novel pathway to use light to control the dimensionality and orientation of topological defects in quantum materials, which could be used to stabilize competing quantum states. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2509_09819 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Dimensionality reduction of optically generated vortex strings in a charge density wave Dahal, Sajal Miller, Alex H. Krapivin, Viktor Orenstein, Gal Duncan, Ryan A. Leonard, Nicholas Hurley, Matthew J. Stanton, Jade Mankowsky, Roman Lemke, Henrik Singh, Anisha Fisher, Ian Trigo, Mariano Teitelbaum, Samuel W. Mesoscale and Nanoscale Physics Statistical Mechanics Strongly Correlated Electrons In phase transitions, mesoscale structures such as topological defects, vortex strings, and domain walls control the path towards equilibrium, and thus the functional properties of many active devices. In photoinduced phase transitions driven by femtosecond laser excitation, the temporal (pulse duration) and spatial (penetration depth) structure of the optical excitation present opportunities for control and creating structures with unique topologies. By performing time-resolved optical pump, x-ray probe experiments on the CDW system Pd-intercalated ErTe$_{3}$, we gain access to the nanoscale dynamics of the mesoscale topological features (vortex strings) produced after a quench, which have a different apparent dimensionality than the topological defects predicted from the bulk system. We show that these vortex strings persist for much longer than the electronic recovery time. The critical exponent obtained from power-law scaling of the intensity as a function of wavevector shows a reduction in the effective dimensionality of the topological defects in the system, corroborated by time-dependent Ginzburg-Landau simulations. Our results demonstrate a novel pathway to use light to control the dimensionality and orientation of topological defects in quantum materials, which could be used to stabilize competing quantum states. |
| title | Dimensionality reduction of optically generated vortex strings in a charge density wave |
| topic | Mesoscale and Nanoscale Physics Statistical Mechanics Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2509.09819 |