One-dimensional Si chains embedded in Pt(111)and protected by a hexagonal boron-nitride monolayer

Autor:	Rose, Silke, Nemes-Incze, Peter, Pratzer, Marco, Caciuc, Vasile, Atodiresei, Nicolae, Morgenstern, Markus
Rok vydání:	2018
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics
Druh dokumentu:	Working Paper
DOI:	10.1016/j.susc.2019.01.013
Popis:	Using scanning tunneling microscopy, we show that Si deposition on Pt(111) at 300K leads to a network of one-dimensional Si chains. On the bare Pt(111) surface, the chains, embedded into the Pt surface, are orientated along the <112>-direction. They disappear within a few hours in ultrahigh vacuum due to the presence of residual gas. Exposing the chains to different gases deliberately reveals that CO is largely responsible for the disappearance of the chains. The chains can be stabilized by a monolayer of hexagonal boron nitride, which is deposited prior to the Si deposition. The resulting Si chains are rotated by 30{\deg} with respect to the chains on the bare Pt(111) surface and survive even an exposure to air for 10 minutes. Comment: 8 pages, 4 Figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1806.02174 Zobrazit plný text záznamu View this record from Arxiv