Prediction of a Two-Dimensional Organic Topological Insulator

IF 9.6 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2013-05-16 DOI:10.1021/nl401147u

Z. F. Wang, Ninghai Su, Feng Liu*

引用次数: 263

Abstract

Topological insulators (TI) are a class of materials exhibiting unique quantum transport properties with potential applications in spintronics and quantum computing. To date, all of the experimentally confirmed TIs are inorganic materials. Recent theories predicted the possible existence of organic TIs (OTI) in two-dimensional (2D) organometallic frameworks. However, those theoretically proposed structures do not naturally exist and remain to be made in experiments. Here, we identify a recently experimentally made 2D organometallic framework, consisting of π-conjugated nickel-bis-dithiolene with a chemical formula Ni₃C₁₂S₁₂, which exhibits nontrivial topological states in both a Dirac band and a flat band, therefore confirming the existence of OTI.

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二维有机拓扑绝缘体的预测

拓扑绝缘体(TI)是一类具有独特量子输运特性的材料，在自旋电子学和量子计算中具有潜在的应用前景。迄今为止，所有实验证实的ti都是无机材料。最近的理论预测在二维(2D)有机金属框架中可能存在有机ti (OTI)。然而，这些理论上提出的结构并不自然存在，仍然需要在实验中做出来。在这里，我们确定了一个由π共轭镍-双二噻吩组成的二维有机金属框架，化学式为Ni3C12S12，它在狄拉克带和平面带中都表现出非平凡的拓扑状态，从而证实了OTI的存在。

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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来源期刊

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

期刊介绍： Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including: - Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale - Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies - Modeling and simulation of synthetic, assembly, and interaction processes - Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance - Applications of nanoscale materials in living and environmental systems Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.