Abstract

SUMMARYWe have made scanning tunnelling microscope (STM) studies of the lattice expansion and topography of cleaved crystals of 2H‐NbSe2 which were intercalated in situ with silver ions entering along one edge of the samples. The measurements confirm the high surface mobility of silver seen in earlier electrochemical studies. The expansion measurements made with optimum 2 Å resolution showed no convincing evidence of silver staging domains. Topographic images revealed noisy patches and shallow depressions on cleaved surfaces of intercalated samples. It is suggested that these depressions might represent silver‐poor regions in the first intercalation layer.

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