Nonreciprocal transmission in composite structure with Weyl semimetal defect layer-Reference-Cited by-同舟云学术

Nonreciprocal transmission in composite structure with Weyl semimetal defect layer

Published:2024-03-14 Issue:6 Volume:79 Page:635-641
ISSN:0932-0784
Container-title:Zeitschrift für Naturforschung A
language:en
Short-container-title:

Author:

Chen Xin¹,Yu Guanxia¹²,Wang Haodong¹

Affiliation:

1. College of Information Sciences and Technology, Nanjing Forestry University , Nanjing 210037 , P.R. China

2. College of Science, Nanjing Forestry University , Nanjing 210037 , P.R. China

Abstract

Abstract A two-unit symmetrical composite structure with the WSMs defect layer was designed. The energy band and transmission properties are studied based on the transfer matrix theory. Due to the WSMs with the property of time-reversal breaking, the nonreciprocal Tamm states for forward and backward incidence are excited in the interface of the symmetrical composite structure. The numerical results show that the nonreciprocity of the Tamm states is enhanced with an increase in the WSMs thickness. By choosing the appropriate geometric parameters of dielectric layers, two pairs of nonreciprocal dispersive curves are obtained in the two-band gap. The present scenario can be applied in some areas, such as optical isolators and multi-channel nonreciprocal transmission devices.

Publisher

Walter de Gruyter GmbH

Link

https://www.degruyter.com/document/doi/10.1515/zna-2023-0302/pdf

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