# Estudio del crecimiento del Sn/Ag(111): explorando la posibilidad de formacion de estaneno

## TL;DR

This study investigates the growth of Sn/Ag(111) to explore stanene formation, finding that experimental conditions may hinder stanene synthesis due to surface alloy development.

## Contribution

It provides experimental insights into Sn epitaxial growth on Ag(111) and discusses challenges in forming stanene under certain conditions.

## Key findings

- Surface state dispersion matches Ag$_2$Sn alloy at 1/3ML Sn
- Discrepancies at higher Sn coverage suggest lack of stanene formation
- Excessive heating may promote surface alloy growth over stanene

## Abstract

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.