  In recent years, 2D materials have attracted increasing attention from the
scientific community due to their superlative properties. The stanene, a
graphene like compound formed by Sn atoms, may have unique properties because
of the spin-orbit coupling SOC (such as the Quantum Spin Hall Effect QSH,
topological superconductivity, among others), that could eventually have
applications in spintronics and quantum computing. In the experiment stanene
epitaxial growth was explored by evaporating Sn onto a Ag(111) substrate.
Partial results using spectroscopic techniques such as LEED and XPS agreed with
literature. Regarding measurements made with UPS/ARPES, dispersion relations
were obtained for the surface state of the Sn/Ag(111) sample: for 1/3ML of Sn
they matched with the reported results for the surface alloy Ag$_2$Sn;
conversely, for (1/3+0,5)ML of Sn they mismatched with the reported parabolic
relation for the stanene, particularly, they were indistinguishable from the
surface alloy one. Probably, lack of formation of stanene was caused by an
excessive heating during the sample preparation process, that could have
produced an increase in the surface alloy Ag$_2$Sn thickness.
