تقرير
A light-induced Weyl semiconductor-to-metal transition mediated by Peierls instability
| العنوان: | A light-induced Weyl semiconductor-to-metal transition mediated by Peierls instability |
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| المؤلفون: | Ning, H., Mehio, O., Lian, C., Li, X., Zoghlin, E., Zhou, P., Cheng, B., Wilson, S. D., Wong, B. M., Hsieh, D. |
| المصدر: | Phys. Rev. B 106, 205118 (2022) |
| سنة النشر: | 2022 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Strongly Correlated Electrons, Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Materials Science |
| الوصف: | Elemental tellurium is a strongly spin-orbit coupled Peierls-distorted semiconductor whose band structure features topologically protected Weyl nodes. Using time-dependent density functional theory calculations, we show that impulsive optical excitation can be used to transiently control the amplitude of the Peierls distortion, realizing a mechanism to switch tellurium between three states: Weyl semiconductor, Weyl metal and non-Weyl metal. Further, we present experimental evidence of this inverse-Peierls distortion using time-resolved optical second harmonic generation measurements. These results provide a pathway to multifunctional ultrafast Weyl devices and introduce Peierls systems as viable hosts of light-induced topological transitions. Comment: 7 pages main text, 4 figures, 11 pages supplementary information |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevB.106.205118 |
| URL الوصول: | http://arxiv.org/abs/2211.01501 |
| رقم الأكسشن: | edsarx.2211.01501 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevB.106.205118 |
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