Varlet, Anastasia and Liu, Ming-Hao and Bischoff, Dominik and Simonet, Pauline and Taniguchi, Takashi and Watanabe, Kenji and Richter, Klaus and Ihn, Thomas and Ensslin, Klaus (2016) Band gap and broken chirality in single-layer and bilayer graphene. PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS, 10 (1). pp. 46-57. ISSN 1862-6254, 1862-6270
Full text not available from this repository. (Request a copy)Abstract
Chirality is one of the key features governing the electronic properties of single- and bilayer graphene: the basics of this concept and its consequences on transport are presented in this review. By breaking the inversion symmetry, a band gap can be opened in the band structures of both systems at the K-point. This leads to interesting consequences for the pseudospin and, therefore, for the chirality. These consequences can be accessed by investigating the evolution of the Berry phase in such systems. Experimental observations of Fabry-Perot interference in a dual-gated bilayer graphene device are finally presented and are used to illustrate the role played by the band gap on the evolution of the pseudospin. The presented results can be attributed to the breaking of the chirality in the energy range close to the gap. (C) 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | P-N-JUNCTIONS; ELECTRONIC-PROPERTIES; SUSPENDED GRAPHENE; BORON-NITRIDE; BERRYS PHASE; GRAPHITE; DIRAC; graphene; bilayers; chirality; Fabry-Perot interference; band gaps; pseudospins; Berry phase |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Klaus Richter |
| Depositing User: | Petra Gürster |
| Date Deposited: | 01 Mar 2019 12:36 |
| Last Modified: | 03 Sep 2020 10:26 |
| URI: | https://pred.uni-regensburg.de/id/eprint/2206 |
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