Strong Nonlinear Optical Response and Transient Symmetry Switch in Type-II Weyl Semimetal β-WP2

被引：0

作者：

Hu, Tianchen ^{[1
]}

Su, Bo ^{[2
]}

Shi, Liyu ^{[1
]}

Wang, Zixiao ^{[1
]}

Yue, Li ^{[1
]}

Xu, Shuxiang ^{[1
]}

Zhang, Sijie ^{[1
]}

Liu, Qiaomei ^{[1
]}

Wu, Qiong ^{[1
]}

Li, Rongsheng ^{[1
]}

Zhou, Xinyu ^{[1
]}

Yuan, Jiayu ^{[1
]}

Wu, Dong ^{[3
]}

Chen, Zhiguo ^{[2
,4
]}

Dong, Tao ^{[1
]}

Wang, Nanlin ^{[1
,3
]}

机构：

[1] Peking Univ, Int Ctr Quantum Mat, Sch Phys, Beijing 100871, Peoples R China

[2] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China

[3] Beijing Acad Quantum Informat Sci, Beijing 100913, Peoples R China

[4] Songshan Lake Mat Lab, Dongguan 523808, Guangdong, Peoples R China

来源：

ADVANCED OPTICAL MATERIALS | 2023年 / 11卷 / 09期

基金：

中国国家自然科学基金;

关键词：

second harmonic generation; ultrafast symmetry switch; Weyl semimetals; MAGNETORESISTANCE; GENERATION; WAVE;

D O I：

10.1002/adom.202202639

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The topological Weyl semimetals (WSMs) with peculiar band structures exhibit novel nonlinear optical enhancement phenomena, even for light at optical wavelengths. While many intriguing nonlinear optical effects are constantly uncovered in type-I WSMs, few experimental works focuse on basic nonlinear optical properties in type-II WSMs. Here a static and time-resolved second harmonic generation (SHG) is performed on the 3D type-II WSM candidate beta-WP2. Although beta-WP2 exhibits extremely high conductivity and a high carrier density (approximate to 10(21) cm(-3)), the SHG is unscreened by conduction electrons, and a rather strong SHG response is observed, comparing with non-topological polar metals. Additionally, the time-resolved SHG experiment traces ultrafast symmetry switch and reveals that polar metal beta-WP2 tends to form an inversion symmetric metastable state after photo-excitation. Intense femtosecond laser pulse can optically drive symmetry switch and tune nonlinear optical response on ultrafast timescales although the interlayer coupling of beta-WP2 is very strong. These findings are illuminating for the polar metal nonlinear optics and provide a new perspective for future ultrafast topological optoelectronic devices.

引用

页数：8

共 66 条

[51] Ultrafast changes in lattice symmetry probed by coherent phonons [J].

Wall, S. ;

Wegkamp, D. ;

Foglia, L. ;

Appavoo, K. ;

Nag, J. ;

Haglund, R. F., Jr. ;

Staehler, J. ;

Wolf, M. .

NATURE COMMUNICATIONS, 2012, 3

[52] Unconventional charge density wave and photoinduced lattice symmetry change in the kagome metal CsV3Sb5 probed by time-resolved spectroscopy [J].

Wang, Z. X. ;

Wu, Q. ;

Yin, Q. W. ;

Gong, C. S. ;

Tu, Z. J. ;

Lin, T. ;

Liu, Q. M. ;

Shi, L. Y. ;

Zhang, S. J. ;

Wu, D. ;

Lei, H. C. ;

Dong, T. ;

Wang, N. L. .

PHYSICAL REVIEW B, 2021, 104 (16)

[53] Weyl Semimetal Phase in Noncentrosymmetric Transition-Metal Monophosphides [J].

Weng, Hongming ;

Fang, Chen ;

Fang, Zhong ;

Bernevig, B. Andrei ;

Dai, Xi .

PHYSICAL REVIEW X, 2015, 5 (01)

[54] Electron and Gravitation. 1. [J].

Weyl, Hermann .

ZEITSCHRIFT FUR PHYSIK, 1929, 56 (5-6) :330-352

[55]

Wu L, 2017, NAT PHYS, V13, P350, DOI [10.1038/NPHYS3969, 10.1038/nphys3969]

[56] Effect of topology on quasiparticle interactions in the Weyl semimetal WP2 [J].

Wulferding, Dirk ;

Lemmens, Peter ;

Buescher, Florian ;

Schmeltzer, David ;

Felser, Claudia ;

Shekhar, Chandra .

PHYSICAL REVIEW B, 2020, 102 (07)

[57] Optical spectroscopy of the Weyl semimetal TaAs [J].

Xu, B. ;

Dai, Y. M. ;

Zhao, L. X. ;

Wang, K. ;

Yang, R. ;

Zhang, W. ;

Liu, J. Y. ;

Xiao, H. ;

Chen, G. F. ;

Taylor, A. J. ;

Yarotski, D. A. ;

Prasankumar, R. P. ;

Qiu, X. G. .

PHYSICAL REVIEW B, 2016, 93 (12)

[58] Observation of Weyl nodes and Fermi arcs in tantalum phosphide [J].

Xu, N. ;

Weng, H. M. ;

Lv, B. Q. ;

Matt, C. E. ;

Park, J. ;

Bisti, F. ;

Strocov, V. N. ;

Gawryluk, D. ;

Pomjakushina, E. ;

Conder, K. ;

Plumb, N. C. ;

Radovic, M. ;

Autes, G. ;

Yazyev, O. V. ;

Fang, Z. ;

Dai, X. ;

Qian, T. ;

Mesot, J. ;

Ding, H. ;

Shi, M. .

NATURE COMMUNICATIONS, 2016, 7

[59] Discovery of a Weyl fermion semimetal and topological Fermi arcs [J].

Xu, Su-Yang ;

Belopolski, Ilya ;

Alidoust, Nasser ;

Neupane, Madhab ;

Bian, Guang ;

Zhang, Chenglong ;

Sankar, Raman ;

Chang, Guoqing ;

Yuan, Zhujun ;

Lee, Chi-Cheng ;

Huang, Shin-Ming ;

Zheng, Hao ;

Ma, Jie ;

Sanchez, Daniel S. ;

Wang, BaoKai ;

Bansil, Arun ;

Chou, Fangcheng ;

Shibayev, Pavel P. ;

Lin, Hsin ;

Jia, Shuang ;

Hasan, M. Zahid .

SCIENCE, 2015, 349 (6248) :613-617

[60] Electronic correlations and flattened band in magnetic Weyl semimetal candidate Co3Sn2S2 [J].

Xu, Yueshan ;

Zhao, Jianzhou ;

Yi, Changjiang ;

Wang, Qi ;

Yin, Qiangwei ;

Wang, Yilin ;

Hu, Xiaolei ;

Wang, Luyang ;

Liu, Enke ;

Xu, Gang ;

Lu, Ling ;

Soluyanov, Alexey A. ;

Lei, Hechang ;

Shi, Youguo ;

Luo, Jianlin ;

Chen, Zhi-Guo .

NATURE COMMUNICATIONS, 2020, 11 (01)

← 1 2 3 4 5 6 7 →