Monolayer MoS2: Trigonal warping, the Γ valley, and spin-orbit coupling effects

Andor Kormányos*, Viktor Zólyomi, Neil D. Drummond, Péter Rakyta, Guido Burkard, Vladimir I. Fal'Ko

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    Abstract

    We use a combined ab initio calculations and k·p theory based approach to derive a low-energy effective Hamiltonian for monolayer MoS 2 at the K point of the Brillouin zone. It captures the features which are present in first-principles calculations but not explained by the theory of Xiao, namely the trigonal warping of the valence and conduction bands, the electron-hole symmetry breaking, and the spin splitting of the conduction band. We also consider other points in the Brillouin zone which might be important for transport properties. Our findings lead to a more quantitative understanding of the properties of this material in the ballistic limit.

    Original languageEnglish
    Article number045416
    JournalPhysical Review B - Condensed Matter and Materials Physics
    Volume88
    Issue number4
    DOIs
    Publication statusPublished - 9 Jul 2013

    Research Beacons, Institutes and Platforms

    • National Graphene Institute

    Fingerprint

    Dive into the research topics of 'Monolayer MoS2: Trigonal warping, the Γ valley, and spin-orbit coupling effects'. Together they form a unique fingerprint.

    Cite this