Open AccessEdge State Quantum Interference in Twisted Graphitic Interfaces
Author(s) -
Oz Annabelle,
Dutta Debopriya,
Nitzan Abraham,
Hod Oded,
Koren Elad
Publication year - 2022
Publication title -
advanced science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.388
H-Index - 100
ISSN - 2198-3844
DOI - 10.1002/advs.202102261
Subject(s) - zigzag , stacking , condensed matter physics , graphene , materials science , lattice (music) , interference (communication) , quantum , quantum interference , coupling (piping) , amplitude , physics , nanotechnology , superconductivity , optics , nuclear magnetic resonance , geometry , quantum mechanics , channel (broadcasting) , mathematics , engineering , acoustics , electrical engineering , metallurgy
Zigzag edges in graphitic systems exhibit localized electronic states that drastically affect their properties. Here, room‐temperature charge transport experiments across a single graphitic interface are reported, in which the interlayer current is confined to the contact edges. It is shown that the current exhibits pronounced oscillations of up to ≈40 µA with a dominant period of ≈5 Å with respect to lateral displacement that do not directly correspond to typical graphene lattice spacing. The origin of these features is computationally rationalized as quantum mechanical interference of localized edge states showing significant amplitude and interlayer coupling variations as a function of the interface stacking configuration. Such interference effects may therefore dominate the transport properties of low‐dimensional graphitic interfaces.