Interaction effects in a chaotic graphene quantum billiard

Imre Hagymási, Péter Vancsó, András Pálinkás, Zoltán Osváth
  • February 2017, American Physical Society (APS)
  • DOI: 10.1103/physrevb.95.075123

Electron-electron interaction in a graphene quantum billiard

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.

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

Dr. Zoltán Osváth
MTA Centre for Energy Research (EK), Institute of Technical Physics and Materials Science (MFA)

The ability of tailoring the electronic and magnetic properties of graphene quantum dots can open new avenues for information coding at nanoscale.

Read Publication

http://dx.doi.org/10.1103/physrevb.95.075123

The following have contributed to this page: Dr. Zoltán Osváth