Discovering the auxetic transition driven by the electronic correlation

IF 8.3 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Acta Materialia Pub Date : 2025-01-09 DOI:10.1016/j.actamat.2025.120715

Jintong Guan , Tenglong Zhu , Cong Sun , Zeyan Wang , Jing Weng , Mingqing Liao , Conglin Zhang , Qingfeng Guan , Erjun Kan

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引用次数: 0

Abstract

The auxetic behavior in nanostructures has attracted considerable attention due to their wide potential applications. Due to the long-standing attribution of auxetic properties to the unique geometric structure of materials, the academic community's understanding of auxeticity is not profound. It is considered to have no access to tuning the auxeticity without phase transition. In this letter, an anomalous case is discovered where the auxetic transition is directly driven by the electronic correlation in Janus-Tetra-SiXY (JT-SiXY; X, Y = O, S, Se) lattice. The auxeticity is highly dependent on the electronic properties. Additionally, the auxeticity is significantly enhanced due to the Janus modification. The emerging auxetic transition effect and enhanced auxeticity would make JT-SiXY a promising candidate in two-dimensional nano-devices. Our study provides valuable clues and useful guidance for designing advanced auxetic materials.

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发现由电子相关驱动的辅生跃迁

由于其广泛的应用前景，纳米结构中的形变行为引起了人们的广泛关注。由于长期以来将材料的塑性特性归因于材料独特的几何结构，学术界对塑性的认识并不深刻。认为如果没有相变，就无法对互补性进行调节。在这封信中，发现了一个异常的情况，即在Janus-Tetra-SiXY (JT-SiXY；X, Y = O， S, Se)晶格。互补性高度依赖于电子性质。此外，由于Janus的修改，互补性显着增强。新出现的形变转变效应和增强的形变性将使JT-SiXY成为二维纳米器件的一个有希望的候选者。本研究为设计先进的增氧材料提供了有价值的线索和有益的指导。

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

Acta Materialia 工程技术-材料科学：综合

CiteScore

16.10

自引率

8.50%

发文量

801

审稿时长

53 days

期刊介绍： Acta Materialia serves as a platform for publishing full-length, original papers and commissioned overviews that contribute to a profound understanding of the correlation between the processing, structure, and properties of inorganic materials. The journal seeks papers with high impact potential or those that significantly propel the field forward. The scope includes the atomic and molecular arrangements, chemical and electronic structures, and microstructure of materials, focusing on their mechanical or functional behavior across all length scales, including nanostructures.