Physica E: Low-Dimensional Systems and Nanostructures

, volume 131 , pages 114750

Terahertz tunable three band narrowband perfect absorber based on Dirac semimetal

Yuqian Wang ¹

Yingting Yi ²

Danyang Xu ³

Zao Yi ¹

Zhiyou Li ¹

Xifang Chen ¹

Jianguo Zhang ⁴

Liangcai Zeng ⁵

Gongfa Li ⁵

Hide authors affiliations Show authors affiliations: 5 affiliations

Joint Laboratory for Extreme Conditions Matter Properties Southwest University of Science and Technology Mianyang 621010 China |

College of Physics and Electronics, Central South University, Changsha 410083, China |

College of Science,Zhejiang University of Technology,Hangzhou 310023,China |

⁴

Department of Physics and Electronic Engineering, Jinzhong University, Jinzhong, 030619, China |

⁵

Key Laboratory of Metallurgical Equipment and Control Technology of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, China |

Publication type: Journal Article

Publication date: 2021-07-01

Elsevier

Physica E: Low-Dimensional Systems and Nanostructures

scimago Q2

wos Q2

SJR: 0.547

CiteScore: 7.6

Impact factor: 2.9

ISSN: 13869477, 18731759

DOI: 10.1016/j.physe.2021.114750

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Electronic, Optical and Magnetic Materials

Atomic and Molecular Physics, and Optics

Condensed Matter Physics

Abstract

A tunable terahertz (THz) narrowband absorber in view of bulk Dirac semimetal (BDS) is designed in this paper. The tunable terahertz absorber's basic unit comprises BDS, intermediate medium, and metal substrate. The BDS has good surface conductivity and the Fermi energy of that is flexible tunable, and the good surface conductivity might make controlled by Fermi energy. The absorption characteristics of the designed absorber are simulated by the finite integral time domain technique. The calculation results show that the designed absorber achieves ideal absorption in 139.97 μm, 163.52 μm, 247.76 μm bands, and the absorption rate is more than 0.96, which realizes ideal narrowband absorption and dynamic tuning. We find that the absorption peaks are flexible and adjustable by changing the Fermi energy of BDS, and the frequency adjustability of the absorber is analyzed. In addition, the effects of different structural parameters on the absorption efficiency and the absorption performance at different incident angles are studied. These results show that, compared with traditional metamaterials, Dirac semimetallic absorbing materials can tune the resonant frequency more effectively, even without reconstructing the structure, which has great application value in many fields, and provide a new reference for future research.

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Wang Y. et al. Terahertz tunable three band narrowband perfect absorber based on Dirac semimetal // Physica E: Low-Dimensional Systems and Nanostructures. 2021. Vol. 131. p. 114750.

GOST all authors (up to 50) Copy

Wang Y., Yi Y., Xu D., Yi Z., Li Z., Chen X., Zhang J., Zeng L., Li G. Terahertz tunable three band narrowband perfect absorber based on Dirac semimetal // Physica E: Low-Dimensional Systems and Nanostructures. 2021. Vol. 131. p. 114750.

RIS |

Cite this

RIS Copy

TY - JOUR

DO - 10.1016/j.physe.2021.114750

UR - https://doi.org/10.1016/j.physe.2021.114750

TI - Terahertz tunable three band narrowband perfect absorber based on Dirac semimetal

T2 - Physica E: Low-Dimensional Systems and Nanostructures

AU - Wang, Yuqian

AU - Yi, Yingting

AU - Xu, Danyang

AU - Yi, Zao

AU - Li, Zhiyou

AU - Chen, Xifang

AU - Zhang, Jianguo

AU - Zeng, Liangcai

AU - Li, Gongfa

PY - 2021

DA - 2021/07/01

PB - Elsevier

SP - 114750

VL - 131

SN - 1386-9477

SN - 1873-1759

ER -

BibTex

Cite this

BibTex (up to 50 authors) Copy

@article{2021_Wang,

author = {Yuqian Wang and Yingting Yi and Danyang Xu and Zao Yi and Zhiyou Li and Xifang Chen and Jianguo Zhang and Liangcai Zeng and Gongfa Li},

title = {Terahertz tunable three band narrowband perfect absorber based on Dirac semimetal},

journal = {Physica E: Low-Dimensional Systems and Nanostructures},

year = {2021},

volume = {131},

publisher = {Elsevier},

month = {jul},

url = {https://doi.org/10.1016/j.physe.2021.114750},

pages = {114750},

doi = {10.1016/j.physe.2021.114750}

}

Publisher

Elsevier

Journal

Physica E: Low-Dimensional Systems and Nanostructures

scimago Q2

wos Q2

SJR

0.547

CiteScore

7.6

Impact factor

2.9

ISSN

13869477 (Print)

18731759