Bulletin of the American Physical Society
APS March Meeting 2021
Volume 66, Number 1
Monday–Friday, March 15–19, 2021; Virtual; Time Zone: Central Daylight Time, USA
Session Y42: Imaging of 2D Moire Systems
11:30 AM–2:30 PM,
Friday, March 19, 2021
Sponsoring
Unit:
DCMP
Chair: Stephanie Lough, University of Central Florida
Abstract: Y42.00012 : Direct Observation of Dirac Fermion Cloning in Graphene/SiC Heterostructure*
1:42 PM–1:54 PM
Live
Presenter:
Qiangsheng Lu
(University of Missouri)
Authors:
Qiangsheng Lu
(University of Missouri)
Guang Bian
(University of Missouri)
In this work, we measured the electronic structures of the BLG/SiC heterostructure. Apart from the duplicated Dirac cone from the superlattice, 24 Dirac cones in the 1st BZ are clearly observed using angle-resolved photoemission spectroscopy (ARPES). These 24 Dirac cones are directly generated from the coupling between graphene layers and the substrate lattice. Furthermore, tight-binding simulation is used to understand the properties of those cloned Dirac Fermions. This work could pave the way for understanding the formation of the Dirac Fermion Cloning and foresee some electron properties generated by the Dirac Fermion Cloning.
*This work was supported by the US National Science Foundation under grant number NSF DMR-1809160.
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