What is it about?
We investigated by scanning tunneling microscopy (STM) and spectroscopy (STS) a graphene quantum dot with lateral size of 15 nm. The measured density of state values and the experimentally observed topography patterns are explained by taking into account the Coulomb interaction between the electrons of this quantum billiard. The theoretical analysis of the level-spacing distribution substantiates the experimental findings.
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Why is it important?
We also reveal by theoretical calculations the magnetic properties of the investigated system, which should be relevant in future graphene based electronic and spintronic applications.
Perspectives
The ability of tailoring the electronic and magnetic properties of graphene quantum dots can open new avenues for information coding at nanoscale.
Dr. Zoltán Osváth
MTA Centre for Energy Research (EK), Institute of Technical Physics and Materials Science (MFA)
Read the Original
This page is a summary of: Interaction effects in a chaotic graphene quantum billiard, February 2017, American Physical Society (APS),
DOI: 10.1103/physrevb.95.075123.
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