Berlin 2018 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 27: Graphene: Electronic properties, structure and substrate interaction II (joint session O/TT)
O 27.10: Vortrag
Dienstag, 13. März 2018, 13:00–13:15, MA 043
Extremely flat band in bilayer graphene on silicon carbide — •Dmitry Marchenko1, Daniil Evtushinsky1, Vagelis Golias1, Andrei Varykhalov1, Thomas Seyller2, and Oliver Rader1 — 1Helmholtz-Zentrum Berlin fur Materialien und Energie GmbH — 2Technische Universitat Chemnitz
In the present work we discover by angle-resolved photoemission an extremely flat band forming a strong 2D-extended van Hove singularity near the K point in bilayer graphene on SiC. We present a novel model for flat band formation in bilayer graphene and other bipartite lattices. Our finding implies that we can expect strong propensity towards a superconducting transition with high critical temperature.