Exploring the graphene edges with coherent electron focusing

P. Rakyta, A. Kormányos, J. Cserti, P. Koskinen

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

We study theoretically the coherent electron focusing in graphene nanoribbons. Using semiclassical and numerical tight-binding calculations we show that armchair edges give rise to equidistant peaks in the focusing spectrum. In the case of zigzag edges at low magnetic fields one can also observe focusing peaks but with increasing magnetic field a more complex interference structure emerges in the spectrum. This difference in the spectra can be observed even if the zigzag edge undergoes structural reconstruction. Therefore transverse electron focusing can help in the identification and characterization of the edge structure of graphene samples.

Original languageEnglish
Article number115411
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume81
Issue number11
DOIs
Publication statusPublished - Mar 9 2010

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Graphene
graphene
Magnetic fields
Nanoribbons
Carbon Nanotubes
Electrons
electrons
magnetic fields
interference

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Exploring the graphene edges with coherent electron focusing. / Rakyta, P.; Kormányos, A.; Cserti, J.; Koskinen, P.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 81, No. 11, 115411, 09.03.2010.

Research output: Contribution to journalArticle

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