Regensburg 2022 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 29: 2D Materials: Graphene
HL 29.6: Vortrag
Donnerstag, 8. September 2022, 10:45–11:00, H36
Topological Phenomena in Self Assembled Folded Graphene — •Lina Bockhorn1, Sung Ju Hong2, Bei Zheng1, Johannes C. Rode1, and Rolf J. Haug1 — 1Institut für Festkörperphysik, Leibniz Universität Hannover, 30167 Hannover, Germany — 2Division of Science Education, Kangwon National University, Chuncheon, 24341, Republic of Korea
The stacking- and folding angle of 2D materials to 3D structures has emerged as an important, novel tuning parameter for the tailoring of optical, mechanical, electronic and magnetic properties. Here, we investigate the final interlayer configurations of self-assembled folded graphene structures generated via atomic force microscopy technique [1, 2] and its electronic properties [3, 4].
Self-assembled folded graphene shows not only the typical electronic properties of twisted graphene layers but also phenomena due to the folded region [3, 4]. In our magnetotransport measurements, we observe e.g. an additional peak next to the charge neutrality peak which is independent of the magnetic field. This peak at a certain charge carrier density is attributed to the compressive strain due the folded edge [3].
[1] J. C. Rode et al., 2D Mater. 6, 015021 (2018)
[2] L. Bockhorn et al., Appl. Phys. Lett. 118, 173101 (2021)
[3] S. J. Hong et al., 2D Materials, 8, 045009 (2021)
[4] S . J. Hong et al., Phys. Rev . B, 105, 205404 (2022)