Fine structure of the lowest Landau level in suspended trilayer graphene

Magneto-transport experiments on ABC-stacked suspended trilayer graphene reveal a complete splitting of the twelve-fold degenerated lowest Landau level, and, in particular, the opening of an exchange-driven gap at the charge neutrality point. A quantitative analysis of distinctness of the quantum Ha...

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Bibliographic Details
Published inarXiv.org
Main Authors van Elferen, H J, Veligura, A, Tombros, N, Kurganova, E V, van Wees, B J, Maan, J C, Zeitler, U
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 03.04.2013
Subjects
Fine structure
Graphene
Physics - Mesoscale and Nanoscale Physics
Quantitative analysis
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Summary:Magneto-transport experiments on ABC-stacked suspended trilayer graphene reveal a complete splitting of the twelve-fold degenerated lowest Landau level, and, in particular, the opening of an exchange-driven gap at the charge neutrality point. A quantitative analysis of distinctness of the quantum Hall plateaus as a function of field yields a hierarchy of the filling factors: \nu=6, 4, and 0 are the most pronounced, followed by \nu=3, and finally \nu=1, 2 and 5. Apart from the appearance of a \nu=4 state, which is probably caused by a layer asymmetry, this sequence is in agreement with Hund's rules for ABC-stacked trilayer graphene.
ISSN:2331-8422
DOI:10.48550/arxiv.1304.0866