Structural and electronic properties of Bi/Au(110)

Atomically thin bismuth films (2D Bi) are becoming a promising research area due to their unique properties and their wide variety of applications such as spintronics, electronic and optoelectronic devices. We report on the structural and electronic properties of Bi on Au(110), explored by low-energy electron diffraction (LEED), scanning tunneling microscopy (STM) and density functional theory (DFT) calculations. At a Bi coverage lower than one monolayer (1ML) various reconstructions are observed, we focus on Bi/Au(110)-c(2×2) reconstruction (at 0.5ML) and Bi/Au(110)-(3×3) structure (at 0.66ML). We propose models for both structures based on STM measurements and further confirm by DFT calculations.

Egzona Neziri, Wei Zhang, Alexander Smogunov, Andrew Mayne, Abdelkader Kara, Yannick J Dappe and Hamid Oughaddou

Nanotechnology, 2023, accepted  doi