Dipolar and magnetic properties of strongly absorbing hybrid interlayer excitons in pristine bilayer MoS${}_2$

Abstract

Van der Waals heterostructures composed of transition metal dichalcogenide monolayers (TMDs) are characterized by their truly rich excitonic properties which are determined by their structural, geometric and electronic properties: In contrast to pure monolayers, electrons and holes can be hosted in different materials, resulting in highly tunable dipolar manyparticle complexes. However, for genuine spatially indirect excitons, the dipolar nature is usually accompanied by a notable quenching of the exciton oscillator strength. Via electric and magnetic field dependent measurements, we demonstrate, that a slightly biased pristine bilayer MoS${}_2$ hosts strongly dipolar excitons, which preserve a strong oscillator strength. We scrutinize their giant dipole moment, and shed further light on their orbital- and valley physics via bias-dependent magnetic field measurements.

arXiv comment7 Pages, 4 Figures

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Cited by in corpus (26)

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• Magnetooptics of layered two-dimensional semiconductors and heterostructures: progress and prospects
• Nonlinear interactions of dipolar excitons and polaritons in MoS2 bilayers
• Stacking-dependent exciton multiplicity in WSe${}_2$ bilayers
• Spatially indirect intervalley excitons in bilayer WSe2
• Highly Tunable Ground and Excited State Excitonic Dipoles in Multilayer 2H-MoSe${}_2$
• Interlayer exciton valley polarization dynamics in large magnetic fields
• Magnetoexcitons in transition-metal dichalcogenides monolayers, bilayers, and van der Waals heterostructures
• Capacitively-coupled and inductively-coupled excitons in bilayer MoS${}_2$
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• Nonlinear exciton drift in piezoelectric two-dimensional materials
• Analogy and dissimilarity of excitons in monolayer and bilayer of MoSe${}_2$
• Quadrupolar and dipolar excitons in symmetric trilayer heterostructures: Insights from first principles theory
• Interlayer exciton polaritons in homobilayers of transition metal dichalcogenides
• Quadrupolar and Dipolar Excitons in Bilayer 2$H$-MoSe${}_2$
• Coupled system of electrons and exciton-polaritons: Screening, dynamical effects, and superconductivity
• Electrical control of orbital and vibrational interlayer coupling in bi- and trilayer 2H-MoS${}_2$
• Twistronics and moiré superlattice physics in 2D transition metal dichalcogenides
• Intermediates of Forming Transition Metal Dichalcogenide Heterostructures Revealed by Machine Learning Simulations
• Electrical Control of Excitons in Bare-MoSe2 and MoSe2/NbSe2 Heterostructure
• Interlayer couplings in homobilayer structures of MSi2X4 (M = Mo/W, X = N/P/As)
• Interlayer exciton mediated second harmonic generation in bilayer MoS2
• Emergence of non-uniform strain induced exciton species in homo- and heterobilayer transition metal dichalcogenides
• Light-enhanced dipolar interactions between exciton polaritons