棋盘格上的拓扑缺陷与高陈氏数双带结构

Q1 Physics and Astronomy

Reviews in Physics Pub Date : 2025-03-06 DOI:10.1016/j.revip.2025.100113

Zhi-Wen Chang , Wei-Chang Hao , Xin Liu

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引用次数: 0

摘要

本文主要研究基于双带结构的棋盘格上的介子缺陷。介子是二维点缺陷，其拓扑电荷给出了两个能带的陈恩数的估计。我们首先从缺陷的角度再现先前模型的结果。然后，将模型推广到更高的陈氏数系统。通过对介子电荷的分析表明，该模型可以达到C=±3的结构。能谱还显示，在边缘处出现了三个闭隙态。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Topological defects and higher Chern number two-band structures on checkerboard lattice

In this paper, we focus on studying the meron defects on checkerboard lattice based on two-band structures. Merons are two-dimensional point defects, whose topological charges give the evaluations of the Chern numbers of the two bands. We first reproduce the results of a previous model from the defect perspective. Then, the model is extended to attain the higher Chern number systems. We show that the model can achieve

C = \pm 3

structures through analyzing the charges of the merons. The energy spectrum also reveals that three gap-closed states appear on the edges.

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来源期刊

Reviews in Physics Physics and Astronomy-Physics and Astronomy (all)

CiteScore

21.30

自引率

0.00%

发文量

审稿时长

98 days

期刊介绍： Reviews in Physics is a gold open access Journal, publishing review papers on topics in all areas of (applied) physics. The journal provides a platform for researchers who wish to summarize a field of physics research and share this work as widely as possible. The published papers provide an overview of the main developments on a particular topic, with an emphasis on recent developments, and sketch an outlook on future developments. The journal focuses on short review papers (max 15 pages) and these are freely available after publication. All submitted manuscripts are fully peer-reviewed and after acceptance a publication fee is charged to cover all editorial, production, and archiving costs.