Screening and gap generation in bilayer graphene

T. Stroucken; Johanna Grönqvist; S.W. Koch

doi:10.1103/physrevb.87.245428

Screening and gap generation in bilayer graphene

T. Stroucken, Johanna Grönqvist, S.W. Koch

Physics

Research output: Contribution to journal › Article › Scientific › peer-review

12 Citations (Scopus)

Abstract

A fully self-consistent treatment for gap generation and Coulomb screening in excitonic insulators is presented. The method is based on the equations of motion for the relevant dynamical variables combined with a variational approach. Applying the theory for a model system of bilayer graphene, an excitonic ground state with a gap exceeding 10 meV is predicted.

Original language	English
Journal	Physical review B: Condensed matter and materials physics
Volume	87
Issue number	24
DOIs	https://doi.org/10.1103/physrevb.87.245428
Publication status	Published - 2013
MoE publication type	A1 Journal article-refereed

Keywords

graphene
2D materials
many-body theory

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10.1103/physrevb.87.245428

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title = "Screening and gap generation in bilayer graphene",

abstract = "A fully self-consistent treatment for gap generation and Coulomb screening in excitonic insulators is presented. The method is based on the equations of motion for the relevant dynamical variables combined with a variational approach. Applying the theory for a model system of bilayer graphene, an excitonic ground state with a gap exceeding 10 meV is predicted.",

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AU - Stroucken, T.

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AU - Koch, S.W.

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AB - A fully self-consistent treatment for gap generation and Coulomb screening in excitonic insulators is presented. The method is based on the equations of motion for the relevant dynamical variables combined with a variational approach. Applying the theory for a model system of bilayer graphene, an excitonic ground state with a gap exceeding 10 meV is predicted.

KW - graphene

KW - 2D materials

KW - many-body theory

UR - https://journals.aps.org/prb/abstract/10.1103/PhysRevB.87.245428

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VL - 87

JO - Physical review B: Condensed matter and materials physics

JF - Physical review B: Condensed matter and materials physics

IS - 24

ER -

Screening and gap generation in bilayer graphene

Abstract

Keywords

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