Circular dichroism in Floquet Chern insulator via high-order harmonics spectroscopy

被引：0

作者：

Yan, Dong ^{[1
]}

Zhang, Zhiying ^{[1
]}

Liu, Yun ^{[1
]}

Guan, Yan ^{[2
]}

Sun, Dongming ^{[3
]}

机构：

[1] Chinese Acad Sci, Key Lab Photochem Convers & Optoelect Mat, Tech Inst Phys & Chem, Beijing 100190, Peoples R China

[2] Peking Univ, Analyt Instrumentat Ctr, Beijing 100871, Peoples R China

[3] Univ Sci & Technol Beijing, Sch Chem & Biol Engn, Beijing 100083, Peoples R China

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2024年 / 36卷 / 03期

基金：

新加坡国家研究基金会;

关键词：

topological insulator; Floquet; ultrafast dynamics; high order harmonics; GENERATION; STATES; PHOTOEMISSION;

D O I：

10.1088/1361-648X/ad0015

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

High-order harmonics (HOHs) spectroscopy is attracting the attention of the condensed matter community, mostly because the HOHs spectrum encode the material property. Topological materials are of interest for both basic research and advanced technologies because of their robust properties against dissipation and perturbations. Floquet engineering technique have been demonstrated to be a unique tool to manipulate topological phase. In this paper, we apply HOH spectroscopy to characterize the Floquet state via the circular dichroism (CD). We find that the CD of the co-rotating harmonics is sensitive to Floquet topological states

引用

页数：6

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