Superconductivity in Graphene-Lithium
arXiv:1310.3813
Abstract
We present first-principles calculations on systems consisting of a few layers of graphene and lithium. In particular, we investigate the evolution of the electron-phonon coupling strength with increasing number of layers. We find that, for intercalated systems such as C6-Li-C6 or C6-Li-C6-Li-C6, the electron-phonon coupling is weak. However, for systems of equal number of graphene and lithium layers, such as C6-Li or C6-Li-C6-Li, the electron-phonon coupling is strong. We investigate the optimal configuration that yields the highest superconducting transition temperature.
16 pages, 6 figures, 2 tables
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