paper

Growth of silicene layers on Ag(111): unexpected effect of the substrate temperature

arXiv:1203.3968 · doi:10.1088/0953-8984/24/17/172001

Abstract

The deposition of one silicon monolayer on the silver (111) substrate in the temperature range 150-300C, gives rise to a mix of (44), ()R30 and ()R13.9 superstructures which strongly depends on the substrate temperature. We deduced from a detailed analysis of the LEED patterns and the STM images that all these superstructures are given by a quasi identical silicon single layer with a honeycomb structure (i.e. a silicene-like layer) with different rotations relatively to the silver substrate. The STM images morphology are explained from the relative position of the silicon atoms relative to the silver atoms. A complete analysis of all possible rotations of the silicene layer predicts also a ()R19.1 superstructure which has not been observed so far.

This manuscript has been withdrawn as it will soon be published on-line in the Journal of Physics: Condensed Matter

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