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HL: Fachverband Halbleiterphysik

HL 32: 2D Materials 2 (joint session DS/HL)

HL 32.6: Vortrag

Mittwoch, 11. März 2026, 16:30–16:45, REC/C213

Magnetotransport in Z-Folded ABC-Stacked Trilayer Graphene Structures — •Maximilian Mischke, Lina Bockhorn, Sofiya Lazareva, and Rolf Haug — Institut für Festkörperphysik, Leibniz Universität Hannover

Folded graphene (multi)layers promise to contain rich and interesting physics [1-3], so we produced a sample to investigate the influence of such a fold on magnetotransport properties of graphene. The measurements were carried out in a 4He cryostate at 1.4 K while the samples' carrier concentration was controlled via a global backgate. The sample itself consists of a z-folded ABC-trilayer graphene partially encapsulated in hBN with electrical contacts that allow for measurements in the unfolded region as well as through the fold. We observed filling factors that are unexpected for ABC-trilayer graphene. The untypical transport behaviour can be explained by angle dependend interlayer coupling and screening effects in the z-fold.

[1] S. J. Hong et al, Phys Rev B 105, 205404 (2022)

[2] H. Schmidt et al, Nature Communications 5(1), 5742 (2014)

[3] Y. Liu et al, Phys Rev B 92, 235438 (2015)

Keywords: Folded Graphene; Magnetotransport