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Tunable Fermi surface topology and Lifshitz transition in bilayer graphene

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Tunable Fermi surface topology and Lifshitz transition in bilayer graphene. / Varlet, Anastasia; Mucha-Kruczynski, Marcin; Bischoff, Dominik et al.
In: Synthetic Metals, Vol. 210, No. A, 12.2015, p. 19-31.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Varlet, A, Mucha-Kruczynski, M, Bischoff, D, Simonet, P, Taniguchi, T, Watanabe, K, Falko, V, Ihn, T & Ensslin, K 2015, 'Tunable Fermi surface topology and Lifshitz transition in bilayer graphene', Synthetic Metals, vol. 210, no. A, pp. 19-31. https://doi.org/10.1016/j.synthmet.2015.07.006

APA

Varlet, A., Mucha-Kruczynski, M., Bischoff, D., Simonet, P., Taniguchi, T., Watanabe, K., Falko, V., Ihn, T., & Ensslin, K. (2015). Tunable Fermi surface topology and Lifshitz transition in bilayer graphene. Synthetic Metals, 210(A), 19-31. https://doi.org/10.1016/j.synthmet.2015.07.006

Vancouver

Varlet A, Mucha-Kruczynski M, Bischoff D, Simonet P, Taniguchi T, Watanabe K et al. Tunable Fermi surface topology and Lifshitz transition in bilayer graphene. Synthetic Metals. 2015 Dec;210(A):19-31. Epub 2015 Aug 3. doi: 10.1016/j.synthmet.2015.07.006

Author

Varlet, Anastasia ; Mucha-Kruczynski, Marcin ; Bischoff, Dominik et al. / Tunable Fermi surface topology and Lifshitz transition in bilayer graphene. In: Synthetic Metals. 2015 ; Vol. 210, No. A. pp. 19-31.

Bibtex

@article{d1616be33e9f4da690db8fd9fbb1ce6b,
title = "Tunable Fermi surface topology and Lifshitz transition in bilayer graphene",
abstract = "Bilayer graphene is a highly tunable material: not only can one tune the Fermi energy using standard gates, as in single-layer graphene, but the band structure can also be modified by external perturbations such as transverse electric fields or strain. We review the theoretical basics of the band structure of bilayer graphene and study the evolution of the band structure under the influence of these two external parameters. We highlight their key role concerning the ease to experimentally probe the presence of a Lifshitz transition, which consists in a change of Fermi contour topology as a function of energy close to the edges of the conduction and valence bands. Using a device geometry that allows the application of exceptionally high displacement fields, we then illustrate in detail the way to probe the topology changes experimentally using quantum Hall effect measurements in a gapped bilayer graphene system.",
keywords = "Bilayer graphene, Lifshitz transition, Strain, Quantum Hall effect, Band structure",
author = "Anastasia Varlet and Marcin Mucha-Kruczynski and Dominik Bischoff and Pauline Simonet and T. Taniguchi and K. Watanabe and Vladimir Falko and Thomas Ihn and Klaus Ensslin",
year = "2015",
month = dec,
doi = "10.1016/j.synthmet.2015.07.006",
language = "English",
volume = "210",
pages = "19--31",
journal = "Synthetic Metals",
issn = "0379-6779",
publisher = "Elsevier BV",
number = "A",

}

RIS

TY - JOUR

T1 - Tunable Fermi surface topology and Lifshitz transition in bilayer graphene

AU - Varlet, Anastasia

AU - Mucha-Kruczynski, Marcin

AU - Bischoff, Dominik

AU - Simonet, Pauline

AU - Taniguchi, T.

AU - Watanabe, K.

AU - Falko, Vladimir

AU - Ihn, Thomas

AU - Ensslin, Klaus

PY - 2015/12

Y1 - 2015/12

N2 - Bilayer graphene is a highly tunable material: not only can one tune the Fermi energy using standard gates, as in single-layer graphene, but the band structure can also be modified by external perturbations such as transverse electric fields or strain. We review the theoretical basics of the band structure of bilayer graphene and study the evolution of the band structure under the influence of these two external parameters. We highlight their key role concerning the ease to experimentally probe the presence of a Lifshitz transition, which consists in a change of Fermi contour topology as a function of energy close to the edges of the conduction and valence bands. Using a device geometry that allows the application of exceptionally high displacement fields, we then illustrate in detail the way to probe the topology changes experimentally using quantum Hall effect measurements in a gapped bilayer graphene system.

AB - Bilayer graphene is a highly tunable material: not only can one tune the Fermi energy using standard gates, as in single-layer graphene, but the band structure can also be modified by external perturbations such as transverse electric fields or strain. We review the theoretical basics of the band structure of bilayer graphene and study the evolution of the band structure under the influence of these two external parameters. We highlight their key role concerning the ease to experimentally probe the presence of a Lifshitz transition, which consists in a change of Fermi contour topology as a function of energy close to the edges of the conduction and valence bands. Using a device geometry that allows the application of exceptionally high displacement fields, we then illustrate in detail the way to probe the topology changes experimentally using quantum Hall effect measurements in a gapped bilayer graphene system.

KW - Bilayer graphene

KW - Lifshitz transition

KW - Strain

KW - Quantum Hall effect

KW - Band structure

U2 - 10.1016/j.synthmet.2015.07.006

DO - 10.1016/j.synthmet.2015.07.006

M3 - Journal article

VL - 210

SP - 19

EP - 31

JO - Synthetic Metals

JF - Synthetic Metals

SN - 0379-6779

IS - A

ER -