Dresden 2026 – scientific programme
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O: Fachverband Oberflächenphysik
O 77: Nanostructures at surfaces:1D, 2D, networks II
O 77.6: Talk
Thursday, March 12, 2026, 11:45–12:00, HSZ/0204
Electronic Modulation by the Sc3N Cluster in Endohedral Fullerene Sc3N@C80 — •Seong-Hyun Hong1,4, Dmitriy Borodin1,2, Lukas Spree1,2, Andrés Pinar Solé1,2, Caroline Hommel1,2, Merve Ercelik1,2, Shinjae Nam1,2, Robert Ranecki1,2, Fabio Donati1,3, Se-Jong Kahng4, and Andreas Heinrich1,3 — 1Center for Quantum Nanoscience (QNS), Institute for Basic Science (IBS) — 2Ewha Womans University — 3Department of Physics, Ewha Womans University — 4Department of Physics, Korea University
Endohedral fullerenes such as Sc3N@C80 present a unique platform to study confined molecular systems, where the behavior of an enclosed cluster can strongly influence the properties of the surrounding cage. Understanding how the Sc3N cluster interacts with the carbon framework at the submolecular level is essential, but direct observation of these interactions remains challenging due to existence of carbon cage.
Here, we combine low-temperature scanning tunneling microscopy (STM) and atomic force microscopy (AFM) with a CO-functionalized tip to investigate Sc3N@C80. Using scanning tunneling spectroscopy (STS) and Kelvin probe force microscopy (KPFM), we map the charge distribution across the fullerene with submolecular resolution, revealing how the Sc3N cluster modulates the electronic structure of the cage. This approach provides significant insight into the interplay between core position and molecular charge distribution, uncovering details of the inner cluster that were previously unclear.
Keywords: scanning tunneling microscopy (STM); atomic force microscopy (AFM); Fullerene; CO tip; electronic structure