首页|Photoinduced Floquet higher-order Weyl semimetal in C6 symmetric Dirac semimetals

Photoinduced Floquet higher-order Weyl semimetal in C6 symmetric Dirac semimetals

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Topological Dirac semimetals are a parent state from which other exotic topological phases of matter,such as Weyl semimetals and topological insulators,can emerge.In this study,we investigate a Dirac semimetal possessing sixfold rotational symmetry and hosting higher-order topological hinge Fermi arc states,which is irradiated by circularly polarized light.Our findings reveal that circularly polarized light splits each Dirac node into a pair of Weyl nodes due to the breaking of time-reversal symmetry,resulting in the realization of the Weyl semimetal phase.This Weyl semimetal phase exhibits rich boundary states,including two-dimensional surface Fermi arc states and hinge Fermi arc states confined to six hinges.Furthermore,by adjusting the incident direction of the circularly polarized light,we can control the degree of tilt of the resulting Weyl cones,enabling the realization of different types of Weyl semimetals.

Dirac semimetalsWeyl semimetalsperiodic drivinghigher-order topology

许欣欣、王梓名、许东辉、陈垂针

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Institute for Advanced Study and School of Physical Science and Technology,Soochow University,Suzhou 215006,China

Department of Physics and Chongqing Key Laboratory for Strongly Coupled Physics,Chongqing University,Chongqing 400044,China

Center of Quantum Materials and Devices,Chongqing University,Chongqing 400044,China

国家重点研发计划国家自然科学基金国家自然科学基金重庆市自然科学基金中央高校基本科研业务费专项江苏省自然科学基金Jiangsu Shuang Chuang Project

2022YFA14037001207410812347101CSTB2022NSCQ-MSX05682023CD-JXY048BK20230066JSSCTD202209

2024

10.1088/1674-1056/ad4634

中国物理B(英文版)
中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDEI
影响因子：0.995
ISSN：1674-1056
年,卷(期)：2024.33(6)
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