Superconductivity in electron-doped arsenene

Abstract

Based on the first-principles density functional theory electronic structure calculation, we investigate the possible phonon-mediated superconductivity in arsenene, a two-dimensional buckled arsenic atomic sheet, under electron doping. We find that the strong superconducting pairing interaction results mainly from the $p_z$-like electrons of arsenic atoms and the $A_1$ phonon mode around the $K$ point, and the superconducting transition temperature can be as high as 30.8 K in the arsenene with 0.2 doped electrons per unit cell and 12\% applied biaxial tensile strain. This transition temperature is about ten times higher than that in the bulk arsenic under high pressure. It is also the highest transition temperature that is predicted for electron-doped two-dimensional elemental superconductors, including graphene, silicene, phosphorene, and borophene.

arXiv comment8 pages, 9 figures

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Cited by in corpus (8)

• Experimental evidence of monolayer arsenene: An exotic two-dimensional semiconducting material
• Strong coupling superconductivity in trilayer film LiB${}_2$C${}_2$
• Electron-phonon properties and superconductivity of doped antimonene
• Unusual thermoelectric transport anisotropy in quasi-2D, rhombohedral GeTe
• Electron-phonon coupling in a honeycomb borophene grown on Al(111) surface
• Dynamical renormalization of electron-phonon coupling in conventional superconductors
• First-principles study of the superconductivity in LaO
• Strain-triggered high-temperature superconducting transition in two-dimensional carbon allotrope