Symmetry transformation of nonlinear optical current of tilted Weyl nodes and application to ferromagnetic MnBi2Te4

doi:10.1088/1674-1056/ad2bfb

中国物理B ›› 2024, Vol. 33 ›› Issue (4): 47303-047303.doi: 10.1088/1674-1056/ad2bfb

Symmetry transformation of nonlinear optical current of tilted Weyl nodes and application to ferromagnetic MnBi₂Te₄

Zhuo-Cheng Lu(卢倬成) and Ji Feng(冯济)^†

International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, China

收稿日期:2023-12-12 修回日期:2024-02-17 接受日期:2024-02-22 出版日期:2024-03-19 发布日期:2024-04-01
通讯作者: Ji Feng E-mail:jfeng11@pku.edu.cn
基金资助:
Project supported by the National Key R&D Program of China (Grant Nos. 2018YFA, 0305601, and 2021YFA1400100), the National Natural Science Foundation of China (Grant Nos. 12274003, 11725415, and 11934001), and the Innovation Program for Quantum Science and Technology (Grant No. 2021ZD0302600).

Symmetry transformation of nonlinear optical current of tilted Weyl nodes and application to ferromagnetic MnBi₂Te₄

Zhuo-Cheng Lu(卢倬成) and Ji Feng(冯济)^†

International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, China

Received:2023-12-12 Revised:2024-02-17 Accepted:2024-02-22 Online:2024-03-19 Published:2024-04-01
Contact: Ji Feng E-mail:jfeng11@pku.edu.cn
Supported by:
Project supported by the National Key R&D Program of China (Grant Nos. 2018YFA, 0305601, and 2021YFA1400100), the National Natural Science Foundation of China (Grant Nos. 12274003, 11725415, and 11934001), and the Innovation Program for Quantum Science and Technology (Grant No. 2021ZD0302600).

摘要/Abstract

摘要： A Weyl node is characterized by its chirality and tilt. We develop a theory of how nth-order nonlinear optical conductivity behaves under transformations of anisotropic tensor and tilt, which clarifies how chirality-dependent and -independent parts of optical conductivity transform under the reversal of tilt and chirality. Built on this theory, we propose ferromagnetic m MnBi₂Te₄ as a magnetoelectrically regulated, terahertz optical device, by magnetoelectrically switching the chirality-dependent and -independent DC photocurrents. These results are useful for creating nonlinear optical devices based on the topological Weyl semimetals.

关键词: nonlinear optical response, topological Weyl semimetals, chiral anomaly

Abstract: A Weyl node is characterized by its chirality and tilt. We develop a theory of how nth-order nonlinear optical conductivity behaves under transformations of anisotropic tensor and tilt, which clarifies how chirality-dependent and -independent parts of optical conductivity transform under the reversal of tilt and chirality. Built on this theory, we propose ferromagnetic m MnBi₂Te₄ as a magnetoelectrically regulated, terahertz optical device, by magnetoelectrically switching the chirality-dependent and -independent DC photocurrents. These results are useful for creating nonlinear optical devices based on the topological Weyl semimetals.

Key words: nonlinear optical response, topological Weyl semimetals, chiral anomaly

中图分类号: (High-field and nonlinear effects)

73.50.Fq

73.43.Qt (Magnetoresistance) 71.55.Ak (Metals, semimetals, and alloys) 73.63.-b (Electronic transport in nanoscale materials and structures)

Zhuo-Cheng Lu(卢倬成) and Ji Feng(冯济). Symmetry transformation of nonlinear optical current of tilted Weyl nodes and application to ferromagnetic MnBi₂Te₄[J]. 中国物理B, 2024, 33(4): 47303-047303.

Zhuo-Cheng Lu(卢倬成) and Ji Feng(冯济). Symmetry transformation of nonlinear optical current of tilted Weyl nodes and application to ferromagnetic MnBi₂Te₄[J]. Chin. Phys. B, 2024, 33(4): 47303-047303.

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Symmetry transformation of nonlinear optical current of tilted Weyl nodes and application to ferromagnetic MnBi₂Te₄

Symmetry transformation of nonlinear optical current of tilted Weyl nodes and application to ferromagnetic MnBi₂Te₄

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