Structural properties of Bi/Au(110)

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

doi:10.1088/1361-6528/acbf55

Structural properties of Bi/Au(110)

Nanotechnology. 2023 Mar 20;34(23). doi: 10.1088/1361-6528/acbf55.

Authors

Egzona Neziri¹, Wei Zhang¹, Alexander Smogunov², Andrew J Mayne¹, Abdelkader Kara^{3

4}, Yannick J Dappe², Hamid Oughaddou^{1

5}

Affiliations

¹ Université Paris-Saclay, CNRS, Institut des Sciences Moléculaires d'Orsay, F-91405 Orsay, France.
² Université Paris-Saclay, CNRS, CEA, Service de Physique de l'Etat Condensé, F-91191 Gif-sur Yvette, France.
³ Department of Physics, University of Central Florida, Orlando, FL 32816, United States of America.
⁴ IRMC, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia.
⁵ Département de Physique, CY Cergy Paris Université, F-95031 Cergy-Pontoise Cedex, France.

PMID: 36848665
DOI: 10.1088/1361-6528/acbf55

Abstract

Atomically thin bismuth films (2D Bi) are becoming a promising research area due to their unique properties and their wide variety of applications in spintronics, electronic and optoelectronic devices. We report on the structural 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 (1 ML) various reconstructions are observed, we focus on Bi/Au(110)-c(2 × 2) reconstruction (at 0.5 ML) and Bi/Au(110)-(3 × 3) structure (at 0.66 ML). We propose models for both structures based on STM measurements and further confirm by DFT calculations.

Keywords: 2D bismuth; DFT; STM.