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arXiv · 2312.02316

Tunable High Spin Chern-Number Insulator Phases in Strained Sb Monolayer

Jacob Cook·Po-Yuan Yang·Theo Volz·Clayton Conner·Riley Satterfield·Joseph Berglund·Qiangsheng Lu·Rob G. Moore·Yueh-Ting Yao·Tay-Rong Chang·Guang Bian
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Abstract

High spin Chern-number insulators (HSCI) have emerged as a novel 2D topological phase of condensed matter that is beyond the classification of topological quantum chemistry. In this work, we report the observation of a semimetallic Sb monolayer carrying the same band topology as HSCI with a spin Chern number equal to 2. Our calculations further indicate a moderate lattice strain can make Sb monolayer an insulator or a semimetal with a tunable spin Chern number from 0 to 3. The results suggest strained Sb monolayers as a promising platform for exploring exotic properties of the HSCI topological matter.

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Jacob Cook, Po-Yuan Yang, Theo Volz, Clayton Conner, Riley Satterfield, Joseph Berglund, Qiangsheng Lu, Rob G. Moore, Yueh-Ting Yao, Tay-Rong Chang, Guang Bian. 2023-12-04. Tunable High Spin Chern-Number Insulator Phases in Strained Sb Monolayer. https://arxiv.org/abs/2312.02316

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