Abstract
We report on a scanning tunnelling microscopy study of TaS2 at 4.2 K. A surface prepared by cleavage showed a superimposed pattern of two types of charge density waves with 3a0 × 3a0 and periodicity, which had never been observed previously. We attribute the superposition to regular stacking of 4Hb polytypes or irregular stacking of 2H and 4Hb layers.
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