高切尔诺数绝缘体工程

IF 0.8 4区 物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY
Sungjong Woo, Seungbum Woo, Jung-Wan Ryu, Hee Chul Park
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引用次数: 0

摘要

切尔绝缘体的概念是拓扑物理学最重要的组成部分之一,它可以在没有外部磁场的情况下实现量子霍尔效应。构建切尔绝缘体通常采用猜测-确认的方法,这种方法效率低且不可预测。在本文中,我们介绍了一种直接构建二维切尔绝缘体的系统方法,它可以提供任何非三维切尔数。我们的方法建立在一维 Rice-Mele 模型的基础上,该模型以其可调极化特性而闻名,为操作提供了一个可靠的框架。通过将该模型扩展到二维,我们能够设计出有效展示预定拓扑量的晶格结构。这项研究不仅促进了切尔绝缘体的发展,还为设计各种具有重要拓扑影响的晶格结构铺平了道路,可能会对量子计算和材料科学产生影响。通过这种方法,我们将阐明在合成材料中设计更复杂和功能性拓扑相的途径。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Engineering high Chern number insulators

Engineering high Chern number insulators

Engineering high Chern number insulators

The concept of Chern insulators is one of the most important building block of topological physics, enabling the quantum Hall effect without external magnetic fields. The construction of Chern insulators has been typically through an guess-and-confirm approach, which can be inefficient and unpredictable. In this paper, we introduce a systematic method to directly construct two-dimensional Chern insulators that can provide any nontrivial Chern number. Our method is built upon the one-dimensional Rice–Mele model, which is well known for its adjustable polarization properties, providing a reliable framework for manipulation. By extending this model into two dimensions, we are able to engineer lattice structures that demonstrate predetermined topological quantities effectively. This research not only contributes the development of Chern insulators but also paves the way for designing a variety of lattice structures with significant topological implications, potentially impacting quantum computing and materials science. With this approach, we are to shed light on the pathways for designing more complex and functional topological phases in synthetic materials.

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来源期刊
Journal of the Korean Physical Society
Journal of the Korean Physical Society PHYSICS, MULTIDISCIPLINARY-
CiteScore
1.20
自引率
16.70%
发文量
276
审稿时长
5.5 months
期刊介绍: The Journal of the Korean Physical Society (JKPS) covers all fields of physics spanning from statistical physics and condensed matter physics to particle physics. The manuscript to be published in JKPS is required to hold the originality, significance, and recent completeness. The journal is composed of Full paper, Letters, and Brief sections. In addition, featured articles with outstanding results are selected by the Editorial board and introduced in the online version. For emphasis on aspect of international journal, several world-distinguished researchers join the Editorial board. High quality of papers may be express-published when it is recommended or requested.
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