Mechanical properties and superconductivity in two-dimensional B2O under extreme strain

Hefei Li; Yinqiao Hao; Dan Sun; Dan Zhou; Guangtao Liu; Hui Wang; Quan Li

doi:10.1039/C9CP04826J

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Mechanical properties and superconductivity in two-dimensional B₂O under extreme strain†

Hefei Li,^a Yinqiao Hao,^a Dan Sun,^a Dan Zhou,*^ab Guangtao Liu,

*^a Hui Wang^a and Quan Li

Author affiliations

* Corresponding authors

^a State Key Laboratory of Superhard Materials, Key Laboratory of Automobile Materials of MOE, Innovation Center for Computational Physics Method and Software, Jilin University, Changchun 130012, China
E-mail: liuguangtao@jlu.edu.cn

^b School of Science, Changchun University of Science and Technology, Changchun 130022, China
E-mail: zhoudan@cust.edu.cn

Abstract

Because of the particular characteristics of layered materials, searching for new two-dimensional (2D) structures has become the foundation of future device manufacture. Using first-principles calculations and theoretical analysis, we identified a new monolayer B₂O and systematically investigated its fundamental mechanical and electronic properties, especially under strain. Due to the complicated puckered hinge structure of monolayer B₂O, it possesses an intrinsic negative Poisson's ratio of −0.021. Moreover, we found that the superconducting state of monolayer B₂O can be improved, where strain plays an effective role in regulating the properties of the 2D material. The current results elucidate the structure and corresponding properties of monolayer B₂O, which may stimulate related fundamental research and potential nanoscale applications.

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Article information

DOI: https://doi.org/10.1039/C9CP04826J
Article type: Paper
Submitted: 31 Aug 2019
Accepted: 04 Nov 2019
First published: 08 Nov 2019

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Phys. Chem. Chem. Phys., 2019,21, 25859-25864

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Mechanical properties and superconductivity in two-dimensional B₂O under extreme strain

H. Li, Y. Hao, D. Sun, D. Zhou, G. Liu, H. Wang and Q. Li, Phys. Chem. Chem. Phys., 2019, 21, 25859 DOI: 10.1039/C9CP04826J

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