1. Layer-controlled nonlinear terahertz valleytronics in two-dimensional semimetal and semiconductor PtSe2.
- Author
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Hemmat, Minoosh, Ayari, Sabrine, Mičica, Martin, Vergnet, Hadrien, Guo, Shasha, Arfaoui, Mehdi, Xuechao Yu, Vala, Daniel, Wright, Adrien, Postava, Kamil, Mangeney, Juliette, Carosella, Francesca, Jaziri, Sihem, Wang, Qi Jie, Zheng Liu, Tignon, Jérôme, Ferreira, Robson, Baudin, Emmanuel, and Dhillon, Sukhdeep
- Subjects
TERAHERTZ materials ,SEMICONDUCTORS ,QUANTUM optics ,OPTICAL polarization ,PHOTOCONDUCTIVITY ,NONLINEAR optics - Abstract
The article explores the research on layer-controlled nonlinear terahertz valleytronics in the two-dimensional material PtSe2. The researchers demonstrate that terahertz nonlinearity can be achieved in PtSe2 by generating ultrafast photocurrents and manipulating the bandstructure valleys. They also observe layer-dependent circular dichroism, which allows for control of the emitted terahertz pulse. This research has implications for terahertz valleytronics, spintronics, and harmonic generation. The study emphasizes the role of the environment in inducing nonlinearity and circular dichroism in PtSe2. [Extracted from the article]
- Published
- 2023
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