Doped graphane: a prototype high-Tc electron-phonon superconductor

Details Doped graphane: a prototype high-Tc electron-phonon superconductor Doped graphane: a prototype high-Tc electron-phonon superconductor

2010-02-03

arxiv.org/abs/1002.0653v1

Phys Rev Lett 105, 037002 (2010)

Physics

Condensed Matter

Materials Science

6 pages, 4 figures

Scientific paper

We show by first-principles calculations that p-doped graphane is a conventional superconductor with a critical temperature (Tc) above the boiling point of liquid nitrogen. The unique strength of the chemical bonds between carbon atoms and the large density of electronic states at the Fermi energy arising from the reduced dimensionality synergetically push Tc above 90K, and give rise to large Kohn anomalies in the optical phonon dispersions. As evidence of graphane was recently reported, and doping of related materials such as graphene, diamond and carbon nanostructures is well established, superconducting graphane may be feasible.

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