Hybrid moiré excitons and trions in twisted MoTe_2-MoSe_2 heterobilayers
arxiv(2024)
摘要
We report experimental and theoretical studies of MoTe_2-MoSe_2
heterobilayers with rigid moiré superlattices controlled by the twist angle.
Using an effective continuum model that combines resonant interlayer electron
tunneling with stacking-dependent moiré potentials, we identify the nature of
moiré excitons and the dependence of their energies, oscillator strengths and
Landé g-factors on the twist angle. Within the same framework, we interpret
distinct signatures of bound complexes among electrons and moiré excitons in
nearly collinear heterostacks. Our work provides fundamental understanding of
hybrid moiré excitons and trions in MoTe_2-MoSe_2 heterobilayers, and
establishes the material system as a prime candidate for optical studies of
correlated phenomena in moiré lattices.
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