Role of the trigonal warping on the minimal conductivity of bilayer graphene

J. Cserti, A. Csordás, Gyula Dávid

Research output: Article

82 Citations (Scopus)

Abstract

Using a reformulated Kubo formula we calculate the zero-energy minimal conductivity of bilayer graphene taking into account the small but finite trigonal warping. We find that the conductivity is independent of the strength of the trigonal warping and it is 3 times as large as that without trigonal warping and 6 times larger than that in single layer graphene. Although the trigonal warping of the dispersion relation around the valleys in the Brillouin zone is effective only for low-energy excitations, our result shows that its role cannot be neglected in the zero-energy minimal conductivity.

Original languageEnglish
Article number066802
JournalPhysical Review Letters
Volume99
Issue number6
DOIs
Publication statusPublished - aug. 8 2007

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graphene
conductivity
Brillouin zones
valleys
energy
excitation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Role of the trigonal warping on the minimal conductivity of bilayer graphene. / Cserti, J.; Csordás, A.; Dávid, Gyula.

In: Physical Review Letters, Vol. 99, No. 6, 066802, 08.08.2007.

Research output: Article

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