Electron-doped phosphorene: A potential monolayer superconductor

D. F. Shao; W. J. Lu; H. Y. Lv; Y. P. Sun

doi:10.1209/0295-5075/108/67004

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arXiv · 1405.0092

Electron-doped phosphorene: A potential monolayer superconductor

D. F. Shao·W. J. Lu·H. Y. Lv·Y. P. Sun

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Abstract

We predict by first-principles calculations that the electron-doped phosphorene is a potential BCS-like superconductor. The stretching modes at the Brillouin-zone center are remarkably softened by the electron-doping, which results in the strong electron-phonon coupling. The superconductivity can be introduced by a doped electron density ($n_{2D}$) above $1.3 \times10^{14}$ cm$^{-2}$, and may exist over the liquid helium temperature when $n_{2D}>2.6 \times10^{14}$ cm$^{-2}$. The maximum critical temperature is predicted to be higher than 10 K. The superconductivity of phosphorene will significantly broaden the applications of this novel material.

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D. F. Shao, W. J. Lu, H. Y. Lv, Y. P. Sun. 2014-12-18. Electron-doped phosphorene: A potential monolayer superconductor. https://doi.org/10.1209/0295-5075%2F108%2F67004

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