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arXiv 2301.02686cond-mat.mes-hallcond-mat.mtrl-sci
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结构溢出:一种识别非晶拓扑材料的有效方法

Structural spillage: an efficient method to identify non-crystalline topological materials

Daniel Muñoz-Segovia, Paul Corbae, Dániel Varjas, Frances Hellman, Sinéad M. Griffin, Adolfo G. Grushin

AI总结:

本文提出结构溢出指标,结合第一性原理计算预测非晶固体的拓扑相,并预测非晶铋双层为拓扑非平凡材料,实现高效预测。

摘要:

虽然拓扑材料并不局限于晶体,但目前尚无有效方法诊断非晶固体(如非晶材料)中的拓扑性质。在此,我们引入结构溢出(structural spillage),一种新的指标,用于预测非晶固体的未知拓扑相,且该方法与第一性原理计算兼容。我们通过非晶铋的紧束缚和第一性原理计算展示了其潜力,预测双层非晶铋是一种新的拓扑非平凡材料。我们的工作开辟了通过第一性原理和高通量搜索高效预测非晶固体的途径。

英文摘要:

While topological materials are not restricted to crystals, there is no efficient method to diagnose topology in non-crystalline solids such as amorphous materials. Here we introduce the structural spillage, a new indicator that predicts the unknown topological phase of a non-crystalline solid, which is compatible with first-principles calculations. We illustrate its potential with tight-binding and first-principles calculations of amorphous bismuth, predicting a bilayer to be a new topologically nontrivial material. Our work opens up the efficient prediction of non-crystalline solids via first-principles and high-throughput searches.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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