Ambipolar charge transport in quasi-free-standing monolayer graphene on SiC obtained by gold intercalation

9Citations
Citations of this article
17Readers
Mendeley users who have this article in their library.

Abstract

We present a study of quasi-free-standing monolayer graphene obtained by intercalation of Au atoms at the interface between the carbon buffer layer (Bu-L) and the silicon-terminated face (0001) of 4H-silicon carbide. Au intercalation is achieved by deposition of an atomically thin Au layer on the Bu-L followed by annealing at 850 °C in an argon atmosphere. We explore the intercalation of Au and decoupling of the Bu-L into quasi-free-standing monolayer graphene by surface science characterization and electron transport in top-gated electronic devices. By gate-dependent magnetotransport we find that the Au-intercalated buffer layer displays all properties of monolayer graphene, namely gate-tunable ambipolar transport across the Dirac point, but we find no observable enhancement of spin-orbit effects in the graphene layer, despite its proximity to the intercalated Au layer.

Cite

CITATION STYLE

APA

Kim, K. H., He, H., Struzzi, C., Zakharov, A., Giusca, C. E., Tzalenchuk, A., … Lara-Avila, S. (2020). Ambipolar charge transport in quasi-free-standing monolayer graphene on SiC obtained by gold intercalation. Physical Review B, 102(16). https://doi.org/10.1103/PhysRevB.102.165403

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free