Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Exploring the graphene edges with coherent electron focusing
AU - Rakyta, Peter
AU - Kormanyos, Andor
AU - Cserti, József
N1 - © 2010 The American Physical Society
PY - 2010/3/9
Y1 - 2010/3/9
N2 - 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.
AB - 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.
U2 - 10.1103/PhysRevB.81.115411
DO - 10.1103/PhysRevB.81.115411
M3 - Journal article
VL - 81
JO - Physical review B
JF - Physical review B
SN - 1098-0121
IS - 11
M1 - 115411
ER -