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Optically induced Lifshitz transition in bilayer graphene

Optically induced Lifshitz transition in bilayer graphene

Title: Optically induced Lifshitz transition in bilayer graphene
Author: Iorsh, Ivan   orcid.org/0000-0003-4992-6122
Dini, Kevin Tanguy Elian
Kibis, Oleg   orcid.org/0000-0003-3367-9980
Shelykh, Ivan   orcid.org/0000-0001-5393-821X
Date: 2017-10-11
Language: English
Scope: 155432
University/Institute: Háskóli Íslands
University of Iceland
School: Verkfræði- og náttúruvísindasvið (HÍ)
School of Engineering and Natural Sciences (UI)
Department: Raunvísindastofnun (HÍ)
Science Institute (UI)
Series: Physical Review B;96(15)
ISSN: 2469-9950
2469-9969 (eISSN)
DOI: 10.1103/PhysRevB.96.155432
Subject: Electronic structure; Fermi surface; Graphene; Condensed Matter & Materials Physics; Þéttefnisfræði; Rafeindafræði; Rafeindir; Segulmagn
URI: https://hdl.handle.net/20.500.11815/1039

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Iorsh, I. V., Dini, K., Kibis, O. V., & Shelykh, I. A. (2017). Optically induced Lifshitz transition in bilayer graphene. Physical Review B, 96(15), 155432. doi:10.1103/PhysRevB.96.155432


It is shown theoretically that the renormalization of the electron energy spectrum of bilayer graphene with a strong high-frequency electromagnetic field (dressing field) results in the Lifshitz transition—the abrupt change in the topology of the Fermi surface near the band edge. This effect substantially depends on the polarization of the field: The linearly polarized dressing field induces the Lifshitz transition from the quadruply connected Fermi surface to the doubly connected one, whereas the circularly polarized field induces the multicritical point where the four different Fermi topologies may coexist. As a consequence, the discussed phenomenon creates a physical basis to control the electronic properties of bilayer graphene with light.


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