Georgi Diankov
;
Chi-Te Liang
;
François Amet
;
Patrick Gallagher
;
Menyoung Lee
;
Andrew J. Bestwick
;
Kevin Tharratt
;
William Coniglio
;
Jan Jaroszynski
;
Kenji Watanabe
(National Institute for Materials Science
)
;
Takashi Taniguchi
(National Institute for Materials Science)
;
David Goldhaber-Gordon
Collection
Citation
Description:
(abstract)We report transport measurements of fractional quantum Hall (FQH) states in the N=2 LL in bilayer graphene, a system with spin and valley degrees of freedom in all LLs, and an additional orbital degeneracy in the 8-fold degenerate N=0/N=1 LLs. In contrast with recent observations of particle-hole asymmetry in the N=0/N=1 LLs of bilayer graphene, the FQH states we observe in the N=2 LL are consistent with the composite fermion model: within a LL, they form a complete sequence of particle-hole symmetric states whose relative strength is dependent on their denominators. The FQH states in the N=2 LL display energy gaps of a few Kelvin, comparable to and in some cases larger than those of fractional states in the N=0/N=1 LLs.
Rights:
Keyword: Fractional quantum Hall effect, bilayer graphene, electron interactions
Date published: 2016-12-21
Publisher: Springer Nature America, Inc
Journal:
- Nature Communications (ISSN: 20411723) vol. 7 issue. 1 13908
Funding:
Manuscript type: Publisher's version (Version of record)
MDR DOI:
First published URL: https://doi.org/10.1038/ncomms13908
Related item:
Other identifier(s):
Contact agent:
Updated at: 2025-02-27 08:31:18 +0900
Published on MDR: 2025-02-27 08:31:18 +0900
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