Differentiated contrasts for M TiS MsFe, Ni/ 1r4 2 UHV-STM images

The specific crystallographic features of M1r4TiS2 MsNi, Fe.lead us to carry out UHV-Scanning Tunneling Microscopy studies, in order to bring the different atoms chemical environment of the structure and the host–guest interactions to light. We imaged the top sulfur planes 001.for both compounds and proposed an explanation to the two well differentiated contrast observed and a surface structural arrangement. S2p XPS core spectra were recorded to highlight the different chemical surrounding for chalcogen atoms and their differentiation depending of the compound considered Ni or Fe1r4TiS2.. q2000 Elsevier Science B.V. All rights reserved.