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arXiv · 1801.07052

Hybrid $\mathbf{k\cdot p}$-tight-binding model for intersubband optics in atomically thin InSe films

Samuel J. Magorrian·Adrian Ceferino·Viktor Zólyomi·Vladimir I. Fal'ko
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Abstract

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

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Samuel J. Magorrian, Adrian Ceferino, Viktor Zólyomi, Vladimir I. Fal'ko. 2018-04-12. Hybrid $\mathbf{k\cdot p}$-tight-binding model for intersubband optics in atomically thin InSe films. https://doi.org/10.1103/physrevb.97.165304

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