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Title: Prediction of superconductivity in Li-intercalated bilayer phosphorene

It is shown that bilayer phosphorene can be transformed from a direct-gap semiconductor to a BCS superconductor by intercalating Li atoms. For the Li-intercalated bilayer phosphorene, we find that the electron occupation of Li-derived band is small and superconductivity is intrinsic. With increasing the intercalation of Li atoms, both increased metallicity and strong electron-phonon coupling are favorable for the enhancement of superconductivity. The obtained electron-phonon coupling λ can be larger than 1 and the superconducting temperature T{sub c} can be increased up to 16.5 K, suggesting that phosphorene may be a good candidate for a nanoscale superconductor.
Authors:
 [1] ;  [2] ;  [3] ;  [2] ;  [3] ;  [2]
  1. Department of Physics, Nanjing Normal University, Nanjing 210023 (China)
  2. (China)
  3. National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093 (China)
Publication Date:
OSTI Identifier:
22395770
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 106; Journal Issue: 11; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ATOMS; BCS THEORY; CLATHRATES; ELECTRON-PHONON COUPLING; ELECTRONS; LAYERS; LITHIUM; METALLICITY; NANOSTRUCTURES; PHOSPHORUS; SEMICONDUCTOR MATERIALS; SUPERCONDUCTIVITY; SUPERCONDUCTORS; TRANSITION TEMPERATURE