Dresden 2026 – wissenschaftliches Programm
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MM: Fachverband Metall- und Materialphysik
MM 19: Poster Session
MM 19.24: Poster
Dienstag, 10. März 2026, 18:00–20:00, P5
Electronic properties of Carbon nanoscrolls — •Tzu-Ching Hsu1, Jhih-Shih You1, Hsiu-Chuan Hsu2, and Ion Cosma Fulga3 — 1Department of Physics, National Taiwan Normal University, Taipei, Taiwan, — 2Graduate Institute of Applied Physics, National Chengchi University, Taipei, Taiwan — 3Institute for Theoretical Solid State Physics, IFW Dresden, Dresden, Germany
Carbon nanoscrolls (CNS), rolled-up structures formed from single-layer graphene, have recently attracted significant attention owing to their distinctive geometry. In this work, we theoretically investigate the topological properties of a series of ABC-stacked CNS with various chiral vectors that break mirror symmetry, within the small-curvature approximation. As the chiral vector is varied, we find that the Dirac cones in the fictitious Brillouin zone shift away from half of the magnetic flux quantum. Furthermore, we show that the combined C2T symmetry, the composition of a 180∘ rotation and spinless time-reversal symmetry, protects the Dirac cones even when chiral symmetry is broken. Our results provide a foundation for further studies of the fundamental physics and potential applications of CNS and other two-dimensional materials with similar geometries.
Keywords: Carbon nanoscrolls; Dirac cone; $C_2T$ symmetry