Poster

Ab-initio analysis of the vibrational dynamics at the Tl/Si(111) surface

P. G. Goiricelaya¹, I. G. Gurtubay^1,2, and A. Eiguren^1,2

¹University of Basque Country (UPV/EHU), Leioa, Spain

²Donostia International Physics Center (DIPC), Donostia, Spain

In this work we present an analysis of the surface lattice dynamics at the Tl/Si(111) surface. We also study the impact in the vibrational spectrum of taking into account relativistic effects. In this sense, we identify several interesting surface vibrational modes of very low energy. We also explore the Gottlieb polynomials method in order to simulate semi-infinite crystals from slab calculations.