DOIAbstract
The surface structure of the metastable solid-state compound 1T-MoS2 was investigated by means of scanning tunneling microscopy (STM). In crystalline 1T-MoS2, which is prepared by oxidation from the intercalation compound Kx(H2O)yMoS2 (x ˜ 0.3), every Mo center is octahedrally surrounded by six sulfur ligands, leading to an av3 × av3 surface structure. A similar MoS2-type phase, but with a smaller amount of intercalated potassium (x <0.3) and a different surface structure (2a × a), forms under the same conditions at an earlier stage of the oxidation reaction. Comparison of the surface structures of these compounds revealed that this type of superstructure is determined not only by intrinsic properties, such as the degree of distortion withi...
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