Volume 108, Number 6, December 2014
|Number of page(s)||6|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||23 December 2014|
Electron-doped phosphorene: A potential monolayer superconductor
1 Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences Hefei 230031, PRC
2 High Magnetic Field Laboratory, Chinese Academy of Sciences - Hefei 230031, PRC
3 Collaborative Innovation Center of Advanced Microstructures, Nanjing University - Nanjing 210093, PRC
Received: 1 September 2014
Accepted: 3 December 2014
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 above , and may exist over the liquid-helium temperature when . The superconductivity can be significantly tuned and enhanced by applying tensile strain. The maximum critical temperature of electron-doped phosphorene is predicted to be higher than 10 K. The superconductivity of phosphorene will significantly broaden the applications of this novel material.
PACS: 74.78.Na – Mesoscopic and nanoscale systems / 73.22.-f – Electronic structure of nanoscale materials and related systems / 63.20.kd – Phonon-electron interactions
© EPLA, 2014
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