High-order harmonic generation in type-II Weyl semimetal TaIrTe 4
Year: 2025
Type: article
Abstract: In condensed matter physics, the study of topological materials has recently extended to the topological chirality of Weyl nodes in type-II Weyl semimetals such as TaIrTe 4 . High-order harmonic generation under strong-field excitation serves as an all-optical probe of their unique electronic topology. Here, we report the high-order harmonic generation in TaIrTe 4 , which exhibits a strong handedness-dependent asymmetry in the ellipticity dependence of harmonic yield, as well as the continuously tunable polarization states of harmonics driven by an elliptically polarized laser. By analyzing the underlying mechanisms, we identify the imprint of the distinct properties of TaIrTe 4 within the harmonic emissions, including the broken inversion symmetry, the tilted chiral Weyl cone and Berry curvature. Our results establish the potential possibility of high-order harmonic generation as a sensitive probe for complex topological properties in quantum materials under strong-field conditions.
Source: Optics Express
DOI: 10.1364/oe.578025
Authors: Siyuan Yao, Peng Yu, Zhiyuan Lou, Xiaochun Ge, Yinghui Zheng, Zhinan Zeng, Dong Sun, Ruxin Li
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,270
OpenAlex ID: W4416857507