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journal article·2022-05Open access

Edge State Quantum Interference in Twisted Graphitic Interfaces

Annabelle Oz, Debopriya Dutta, Abraham Nitzan, Oded Hod, Elad Koren

Advanced Science· Volume 9· Issue 14
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Source abstract

Abstract

Abstract 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.
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Research context

Nanomaterials

OpenAlex topics: Graphene research and applications · Advancements in Battery Materials · Surface and Thin Film Phenomena

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Physical Chemistry School of Chemistry The Raymond and Beverly Sackler Faculty of Exact Sciences and The Sackler Center for Computational Molecular and Materials Science Tel Aviv University Tel Aviv 6997801 Israel

Faculty of Materials Science and Engineering and the Russell Berrie Nanotechnology Institute Technion – Israel Institute of Technology Haifa 3200003 Israel

Department of Chemistry University of Pennsylvania Philadelphia PA 19103 USA

The Nancy and Stephen Grand Technion Energy Program Technion – Israel Institute of Technology Haifa 3200003 Israel

Funding

Israel Science Foundation

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