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Razado-Colambo I, Avila J, Nys JP, et al. NanoARPES of twisted bilayer graphene on SiC: absence of velocity renormalization for small angles. Sci Rep. 2016;6:27261doi: 10.1038/srep27261.
Razado-Colambo, I., Avila, J., Nys, J. P., Chen, C., Wallart, X., Asensio, M. C., & Vignaud, D. (2016). NanoARPES of twisted bilayer graphene on SiC: absence of velocity renormalization for small angles. Scientific reports, 627261. https://doi.org/10.1038/srep27261
Razado-Colambo, I, et al. "NanoARPES of twisted bilayer graphene on SiC: absence of velocity renormalization for small angles." Scientific reports vol. 6 (2016): 27261. doi: https://doi.org/10.1038/srep27261
Razado-Colambo I, Avila J, Nys JP, Chen C, Wallart X, Asensio MC, Vignaud D. NanoARPES of twisted bilayer graphene on SiC: absence of velocity renormalization for small angles. Sci Rep. 2016 Jun 06;6:27261. doi: 10.1038/srep27261. PMID: 27264791; PMCID: PMC4893698.
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Sci Rep. 2016 Jun 06;6:27261. doi: 10.1038/srep27261.

NanoARPES of twisted bilayer graphene on SiC: absence of velocity renormalization for small angles.

Scientific reports

I Razado-Colambo, J Avila, J-P Nys, C Chen, X Wallart, M-C Asensio, D Vignaud

Affiliations

  1. I.E.M.N., UMR CNRS 8520, Av. Poincaré CS 60069, 59652, Villeneuve d'Ascq Cedex, France.
  2. Synchrotron SOLEIL, L'Orme des Merisiers, Saint Aubin-BP 48, 91192 Gif sur Yvette Cedex, France.

PMID: 27264791 PMCID: PMC4893698 DOI: 10.1038/srep27261

Abstract

The structural and electronic properties of twisted bilayer graphene (TBG) on SiC(000) grown by Si flux-assisted molecular beam epitaxy were investigated using scanning tunneling microscopy (STM) and angle-resolved photoelectron spectroscopy with nanometric spatial resolution. STM images revealed a wide distribution of twist angles between the two graphene layers. The electronic structure recorded in single TBG grains showed two closely-spaced Dirac π bands associated to the two stacked layers with respective twist angles in the range 1-3°. The renormalization of velocity predicted in previous theoretical calculations for small twist angles was not observed.

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