Skip to Main content Skip to Navigation
Journal articles

Few layer epitaxial germanene: a novel two-dimensional Dirac material

Abstract : Monolayer germanene, a novel graphene-like germanium allotrope akin to silicene has been recently grown on metallic substrates. Lying directly on the metal surfaces the reconstructed atom-thin sheets are prone to lose the massless Dirac fermion character and unique associated physical properties of free standing germanene. Here, we show that few layer germanene, which we create by dry epitaxy on a gold template, possesses Dirac cones thanks to a reduced interaction. This finding established on synchrotron-radiation-based photoemission, scanning tunneling microscopy imaging and surface electron diffraction places few layer germanene among the rare two-dimensional Dirac materials. Since germanium is currently used in the mainstream Si-based electronics, perspectives of using germanene for scaling down beyond the 5 nm node appear very promising. Other fascinating properties seem at hand, typically the robust quantum spin Hall effect for applications in spintronics and the engineering of Floquet Majorana fermions by light for quantum computing.
Complete list of metadata

https://hal-amu.archives-ouvertes.fr/hal-03246039
Contributor : Julien Caugant <>
Submitted on : Wednesday, June 2, 2021 - 10:50:39 AM
Last modification on : Wednesday, June 2, 2021 - 11:08:46 AM

File

srep20714.pdf
Publisher files allowed on an open archive

Licence


Distributed under a Creative Commons Attribution 4.0 International License

Identifiers

Collections

Citation

María Dávila, Guy Le Lay. Few layer epitaxial germanene: a novel two-dimensional Dirac material. Scientific Reports, Nature Publishing Group, 2016, 6, ⟨10.1038/srep20714⟩. ⟨hal-03246039⟩

Share

Metrics

Record views

22

Files downloads

10