Generic suppression of conductance quantization of interacting electrons in graphene nanoribbons in a perpendicular magnetic field
2010 (English)In: PHYSICAL REVIEW B, ISSN 1098-0121, Vol. 82, no 12, 121410- p.Article in journal (Refereed) Published
The effects of electron interaction on the magnetoconductance of graphene nanoribbons (GNRs) are studied within the Hartree approximation. We find that a perpendicular magnetic field leads to a suppression instead of an expected improvement of the quantization. This suppression is traced back to interaction-induced modifications of the band structure leading to the formation of compressible strips in the middle of GNRs. It is also shown that the hard-wall confinement combined with electron interaction generates overlaps between forward and backward propagating states, which may significantly enhance backscattering in realistic GNRs. The relation to available experiments is discussed.
Place, publisher, year, edition, pages
American Physical Society , 2010. Vol. 82, no 12, 121410- p.
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-60230DOI: 10.1103/PhysRevB.82.121410ISI: 000281846000002OAI: oai:DiVA.org:liu-60230DiVA: diva2:355870
Artsem Shylau, Igor Zozoulenko, H Xu and T Heinzel, Generic suppression of conductance quantization of interacting electrons in graphene nanoribbons in a perpendicular magnetic field, 2010, PHYSICAL REVIEW B, (82), 12, 121410.
Copyright: American Physical Society