Hybrid Moiré Excitons and Trions in Twisted MoTe₂-MoSe₂ Heterobilayers.

Abstract

We report experimental and theoretical studies of MoTe₂-MoSe₂ 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 <i>g</i>-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 a fundamental understanding of hybrid moiré excitons and trions in MoTe₂-MoSe₂ heterobilayers and establishes the material system as a prime candidate for optical studies of correlated phenomena in moiré lattices.