TY - JOUR
T1 - Curvature effects on magnetoelectronic properties of nanographene ribbons
AU - Lin, Chiun Yan
AU - Chen, Szu Chao
AU - Wu, Jhao Ying
AU - Lin, Ming Fa
N1 - Copyright:
Copyright 2012 Elsevier B.V., All rights reserved.
PY - 2012/6
Y1 - 2012/6
N2 - Magnetoelectronic properties of curved nanographene ribbons are investigated through the Peierls tight-binding model. Those properties are strongly affected by an effectively non-uniform magnetic field and the finite-size effect. The curvature converts quasi-Landau levels into oscillating parabolic energy bands with several band-edge states. Such extra states induce asymmetric prominent peaks in the density of states. The number, height, spacing and frequency of those peaks depend strongly on the field strength and the central angle. Moreover, the spatial symmetry of the Landau wave function is broken. The simple proportionality relationship between the wave function on the two sublattices A and B disappears, which implies that the essential physical properties might be drastically changed. Nanographene ribbons are very different from carbon nanotubes in electronic properties, mainly owing to the boundary conditions.
AB - Magnetoelectronic properties of curved nanographene ribbons are investigated through the Peierls tight-binding model. Those properties are strongly affected by an effectively non-uniform magnetic field and the finite-size effect. The curvature converts quasi-Landau levels into oscillating parabolic energy bands with several band-edge states. Such extra states induce asymmetric prominent peaks in the density of states. The number, height, spacing and frequency of those peaks depend strongly on the field strength and the central angle. Moreover, the spatial symmetry of the Landau wave function is broken. The simple proportionality relationship between the wave function on the two sublattices A and B disappears, which implies that the essential physical properties might be drastically changed. Nanographene ribbons are very different from carbon nanotubes in electronic properties, mainly owing to the boundary conditions.
UR - http://www.scopus.com/inward/record.url?scp=84861955405&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84861955405&partnerID=8YFLogxK
U2 - 10.1143/JPSJ.81.064719
DO - 10.1143/JPSJ.81.064719
M3 - Article
AN - SCOPUS:84861955405
SN - 0031-9015
VL - 81
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
IS - 6
M1 - 064719
ER -