Exploring the graphene edges with coherent electron focusing

Rakyta, Peter and Kormanyos, Andor and Cserti, József (2010) Exploring the graphene edges with coherent electron focusing. Physical review B, 81 (11): 115411. ISSN 1098-0121

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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.

Item Type:
Journal Article
Journal or Publication Title:
Physical review B
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© 2010 The American Physical Society
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Deposited On:
28 Sep 2011 15:47
Last Modified:
09 May 2024 00:33