Giant nonreciprocal second-harmonic generation from antiferromagnetic bilayer CrI3.

Nature
Zeyuan SunShiwei Wu

Abstract

Layered antiferromagnetism is the spatial arrangement of ferromagnetic layers with antiferromagnetic interlayer coupling. The van der Waals magnet chromium triiodide (CrI3) has been shown to be a layered antiferromagnetic insulator in its few-layer form1, opening up opportunities for various functionalities2-7 in electronic and optical devices. Here we report an emergent nonreciprocal second-order nonlinear optical effect in bilayer CrI3. The observed second-harmonic generation (SHG; a nonlinear optical process that converts two photons of the same frequency into one photon of twice the fundamental frequency) is several orders of magnitude larger than known magnetization-induced SHG8-11 and comparable to the SHG of the best (in terms of nonlinear susceptibility) two-dimensional nonlinear optical materials studied so far12,13 (for example, molybdenum disulfide). We show that although the parent lattice of bilayer CrI3 is centrosymmetric, and thus does not contribute to the SHG signal, the observed giant nonreciprocal SHG originates only from the layered antiferromagnetic order, which breaks both the spatial-inversion symmetry and the time-reversal symmetry. Furthermore, polarization-resolved measurements reveal underlying C2h cr...Continue Reading

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Citations

Nov 22, 2019·Advanced Materials·Shumeng ChiHuaijin Zhang
Oct 30, 2019·Nature Materials·Tiancheng SongXiaodong Xu
Apr 22, 2020·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Hiroko YokotaYoshiaki Uesu
May 19, 2020·Advanced Materials·Fakun WangTianyou Zhai
Aug 5, 2020·Nature Communications·Amber McCrearyAngela R Hight Walker
Oct 30, 2019·Nature Materials·Ji-Hui Yang, Hongjun Xiang
Sep 25, 2020·Proceedings of the National Academy of Sciences of the United States of America·Wencan JinLiuyan Zhao
Feb 29, 2020·Physical Review Letters·Ding-Fu ShaoEvgeny Y Tsymbal
Sep 3, 2020·The Journal of Chemical Physics·Ying LiWei-Tao Liu
Oct 30, 2019·Nature Materials·Tingxin LiJie Shan
Oct 27, 2020·Advanced Materials·Jia LiangJun Lou
Jan 10, 2021·Nature Communications·Mathias AugustinElton J G Santos
Feb 9, 2021·Chemical Reviews·Hadallia BergeronMark C Hersam
Nov 20, 2020·Nanomaterials·Linlin ZhouWei Xiong
Dec 15, 2020·Physical Review Letters·Daniel KaplanBinghai Yan
Feb 26, 2021·The Journal of Physical Chemistry Letters·Jihai ZhangDingyong Zhong
Feb 19, 2021·Nano Letters·Chao LeiAllan H MacDonald
Aug 14, 2020·Nano Letters·D SorianoJ Fernández-Rossier
Apr 18, 2021·Science Advances·Shingo ToyodaNaoki Ogawa
Apr 16, 2021·Nano Letters·Kihong LeeXiaoyang Zhu
Jun 15, 2021·Nanoscale·Ke WangGang Zhang
Jun 16, 2021·Nature Materials·Qiong MaKenneth S Burch
Jul 28, 2021·Nature Materials·Nathan P WilsonXiaoyang Zhu

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Methods Mentioned

BETA
neutron diffraction

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