Abstract
Abstract In this article, the density functional theory is employed to evaluate the elastic and plastic properties of the monolayer bismuthene. To investigate the influence of the external electric field on the bismuthene mechanical properties, the external electric fields with different magnitudes are applied to it. It is shown that Young's modulus of the bismuthene is not sensitive to small electric fields. However, a large external electric field can change it. Similarly, a sufficiently large external electric field can result in decreasing the yield strain of the monolayer bismuthene. Besides, it is shown that the Bi–Bi bond length is not sensitive to the presence of the external electric field.
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