Superconductivity in Potassium-Doped
Few-Layer Graphene
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Abstract
Here we report the successful synthesis of superconducting
potassium-doped
few-layer graphene (K-doped FLG) with a transition temperature of
4.5 K, which is 1 order of magnitude higher than that observed in
the bulk potassium graphite intercalation compound (GIC) KC<sub>8</sub> (<i>T</i><sub>c</sub> = 0.39 K). The realization of superconductivity
in K-doped FLG shows the potential for the development of new superconducting
electronic devices using two-dimensional (2D) graphene as a basis
material