Structural analysis of [Formula: see text] on [Formula: see text] at low coverages: Towards the [Formula: see text] surface alloy with alternating fcc and hcp domains.

ABSTRACT: We report on the structural and chemical evolution of submonolayer [Formula: see text] on [Formula: see text] up to the formation of the striped [Formula: see text] surface alloy. Using Low-Energy Electron Diffraction (LEED) and Scanning Tunneling Microscopy (STM), we identify a previously unobserved hexagonal [Formula: see text]-reconstruction at a [Formula: see text] film thickness of [Formula: see text] monolayers (ML). X-ray Photoelectron Spectroscopy (XPS) analysis reveals that the [Formula: see text]-structure is not chemically bonded to the [Formula: see text] substrate. With increasing [Formula: see text] coverage, the [Formula: see text]-reconstruction performs a structural transition into a mixed phase before forming a local [Formula: see text]-reconstruction at a [Formula: see t

SUBMITTER: Hochhaus JA 

PROVIDER: S-EPMC11889230 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature