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Your search keyword '"Lu, Ming‐Hui"' showing total 14 results
Start Over Author "Lu, Ming‐Hui" Journal nature communications
14 results on '"Lu, Ming‐Hui"'

11. High-harmonic generation in Weyl semimetal β-WP2 crystals.

Author

Lv, Yang-Yang, Xu, Jinlong, Han, Shuang, Zhang, Chi, Han, Yadong, Zhou, Jian, Yao, Shu-Hua, Liu, Xiao-Ping, Lu, Ming-Hui, Weng, Hongming, Xie, Zhenda, Chen, Y. B., Hu, Jianbo, Chen, Yan-Feng, and Zhu, Shining

Subjects
FEMTOSECOND pulses, ELECTRONIC band structure, FEMTOSECOND lasers, CRYSTALS, ULTRAVIOLET radiation, ELECTRONIC structure
Abstract

As a quantum material, Weyl semimetal has a series of electronic-band-structure features, including Weyl points with left and right chirality and corresponding Berry curvature, which have been observed in experiments. These band-structure features also lead to some unique nonlinear properties, especially high-order harmonic generation (HHG) due to the dynamic process of electrons under strong laser excitation, which has remained unexplored previously. Herein, we obtain effective HHG in type-II Weyl semimetal β-WP2 crystals, where both odd and even orders are observed, with spectra extending into the vacuum ultraviolet region (190 nm, 10th order), even under fairly low femtosecond laser intensity. In-depth studies have interpreted that odd-order harmonics come from the Bloch electron oscillation, while even orders are attributed to Bloch oscillations under the "spike-like" Berry curvature at Weyl points. With crystallographic orientation-dependent HHG spectra, we further quantitatively retrieved the electronic band structure and Berry curvature of β-WP2. These findings may open the door for exploiting metallic/semimetallic states as solid platforms for deep ultraviolet radiation and offer an all-optical and pragmatic solution to characterize the complicated multiband electronic structure and Berry curvature of quantum topological materials. Weyl semimetals have interesting band-structure features that lead to unique properties. Here, the authors observe and study high-harmonic generation in type-II Weyl semimetal β-WP2 crystals. [ABSTRACT FROM AUTHOR]

Published
2021
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13. Semiconductor/relaxor 0–3 type composites without thermal depolarization in Bi0.5Na0.5TiO3-based lead-free piezoceramics

Author

Zhang, Ji, primary, Pan, Zhao, additional, Guo, Fei-Fei, additional, Liu, Wen-Chao, additional, Ning, Huanpo, additional, Chen, Y. B., additional, Lu, Ming-Hui, additional, Yang, Bin, additional, Chen, Jun, additional, Zhang, Shan-Tao, additional, Xing, Xianran, additional, Rödel, Jürgen, additional, Cao, Wenwu, additional, and Chen, Yan-Feng, additional

Published
2015
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