Issue 43, 2018

How robust is the metallicity of two dimensional gallium?

Abstract

Atomically thin gallium layers have recently been experimentally produced via solid–melt exfoliation, and show promise as robustly metallic 2D materials for electronic applications. However, the extent to which the experimental technique can be extended to other metals relies on understanding how the 2D structures relate to the bulk form of gallium, which is itself unique as an elemental ‘molecular metal’. We relate the experimentally formed 2D materials to the theoretically predicted ‘bilayer gallium’ which has previously been shown to be stable in vacuum at the nanoscale, via density functional theory calculations. We also study the variation of electronic structure with lattice strain to confirm the extent to which the metallicity will be robust on a wide range of substrate materials.

Graphical abstract: How robust is the metallicity of two dimensional gallium?

Supplementary files

Article information

Article type
Paper
Submitted
19 Aug 2018
Accepted
23 Oct 2018
First published
24 Oct 2018
This article is Open Access
Creative Commons BY license

Phys. Chem. Chem. Phys., 2018,20, 27668-27674

How robust is the metallicity of two dimensional gallium?

D. Z. Metin, L. Hammerschmidt and N. Gaston, Phys. Chem. Chem. Phys., 2018, 20, 27668 DOI: 10.1039/C8CP05280H

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