Polarization-dependent spin wave channels in antiferromagnetic magnonic crystals

IF 3.5 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2025-03-25 DOI:10.1063/5.0256440

Zhan Lv, Zhi-ming Yan, Zhi-xiong Li, Xi-guang Wang, Yao-zhuang Nie, Qing-lin Xia, Xiu-feng Han, Guang-hua Guo

引用次数: 0

Abstract

We theoretically study the spin wave (SW) band structures in antiferromagnetic magnonic crystals formed by applying periodically modulated magnetic fields. We find that when the magnetic field is symmetric, the SW bands with different polarization are degenerate. However, if we consider an asymmetric magnetic field, the degeneracy of the SW bands is lifted due to the breaking of time-reversal symmetry. In this case, we obtain the polarization-dependent SW channels. Furthermore, we show that the tuning of SW band structures both in frequency and momentum spaces can be realized with the help of Dzyaloshinskii–Moriya interaction. The results presented in this work may find their use in antiferromagnet-based magnonic devices.

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来源期刊

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.