Hybrid k p-tight-binding model for intersubband optics in atomically thin InSe lms

Samuel Magorrian*, Adrian Ceferino, Viktor Zolyomi, Vladimir Fal'ko

*Corresponding author for this work

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

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    Abstract

    We propose atomic films of n-doped γ-InSe as a platform for intersubband optics in the infrared and far-infrared range, coupled to out-of-plane polarized light. Depending on the film thickness (number of layers) and the amount of n-doping of the InSe film, these transitions span from ∼0.7 eV for bilayer to ∼0.05 eV for 15-layer InSe. We use a hybrid k·p theory and tight-binding model, fully parametrized using density-functional theory, to predict their oscillator strengths and thermal linewidths at room temperature.

    Original languageEnglish
    Article number165304
    JournalPhysical Review B
    Volume97
    Issue number16
    Early online date12 Apr 2018
    DOIs
    Publication statusPublished - 2018

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