Optical conductivity of granular aluminum films near the Mott metal-to-insulator transition
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DOI: 10.1103/physrevb.99.224503
Abstract: We report measurements of the energy gap of granular aluminum films by THz spectroscopy. We find that as the grains progressively decouple, the coupling ratio $2\Delta(0)/k_{B}T_{c}$ increases above the BCS weak coupling ratio $3.53$, and… read more here.
Keywords: conductivity granular; optical conductivity; aluminum films; granular aluminum ... See more keywords