Magnetoexcitons and Massive Dirac Fermions in Monolayers of Transition Metal Dichalcogenides in a High Magnetic Field

Abstract

We present a theory of the emission spectrum of magnetoexcitons interacting with a $\nu =1$ quantum Hall state of massive Dirac fermions in monolayer transition metal dichalcogenides in high magnetic fields. Using an ab initio-parametrized massive Dirac fermion model including valley and spin degrees of freedom, combined with exact diagonalization techniques, we show that interband emission from the massive Dirac Fermion magnetoexciton interacting with $\nu =1$ state directly probes intra-conduction-band excitations of the $\nu =1$. Many-body interactions with the filled massive Dirac fermion $\nu =1$ level yield a strong renormalization of the emission spectrum, including fully polarized emission, a pronounced redshift, and broadening relative to neutral and charged excitons. The calculated spectra are consistent with recent experiments [1-3], establishing magneto-spectroscopy as a probe of finite carrier densities in massive Dirac systems.

arXiv comment4+6 figures

References in corpus (34)

• The electronic properties of graphene
• Van der Waals heterostructures
• Coupled spin and valley physics in monolayers of MoS2 and other group-VI dichalcogenides
• Landau level degeneracy and quantum Hall effect in a graphite bilayer
• Optical Spectrum of MoS${}_2$: Many-body Effects and Diversity of Exciton States
• Beyond Dirac and Weyl fermions: Unconventional quasiparticles in conventional crystals
• Fermi polaron-polaritons in charge-tunable atomically thin semiconductors
• Monolayer MoS2: trigonal warping, "Γ-valley", and spin-orbit coupling effects
• Exciton Diamagnetic Shifts and Valley Zeeman Effects in Monolayer WS${}_2$ and MoS${}_2$ to 65 Tesla
• Band nesting and the optical response of two-dimensional semiconducting transition metal dichalcogenides
• Revealing exciton masses and dielectric properties of monolayer semiconductors with high magnetic fields
• Exciton band structure of monolayer MoS2
• Nonanalyticity, Valley Quantum Phases, and Light-like Exciton Dispersion in Monolayer TMDs: Theory and First-Principles Calculations
• Magneto-Optics of Exciton Rydberg States in a Monolayer Semiconductor
• How dielectric screening in two-dimensional crystals affects the convergence of excited-state calculations: Monolayer MoS${}_2$
• Optical investigation of monolayer and bulk tungsten diselenide (WSe${}_2$) in high magnetic fields
• Spin- and valley-dependent magneto-optical properties of MoS2
• Interlayer excitons in transition metal dichalcogenide heterostructures
• The valley Zeeman effect in inter- and intra-valley trions in monolayer WSe${}_2$
• Valley Zeeman effect and Landau levels in Two-Dimensional Transition Metal Dichalcogenides
• Distinctive signatures of the spin- and momentum-forbidden dark exciton states in the photo-luminescences of strained WSe${}_2$ monolayers under thermalization
• Optical Absorption by Dirac Excitons in Single-Layer Transition-Metal Dichalcogenides
• Giant effective Zeeman splitting in a monolayer semiconductor realized by spin-selective strong light-matter coupling
• Landau-quantized excitonic absorption and luminescence in a monolayer valley semiconductor
• Controlling exciton many-body states by the electric-field effect in monolayer MoS${}_2$
• Band nesting and exciton spectrum in monolayer MoS${}_2$
• Trions in MoS${}_2$ are quantum superpositions of intra- and intervalley spin states
• The Fermi edge singularity of spin polarized electrons
• Ten-valley excitonic complexes in charge-tunable monolayer WSe${}_2$
• Electrically Tunable Fine Structure of Negatively Charged Excitons in Gated Bilayer Graphene Quantum Dots
• Time, momentum, and energy resolved pump-probe tunneling spectroscopy of two-dimensional electron systems
• Landau-level composition of bound exciton states in magnetic field
• Signatures of valley drift in the diversified band dispersions of bright, gray, and dark excitons in MoS2 monolayers under uni-axial strains
• Electrically tunable MoSe${}_2$/WSe${}_2$ heterostructure-based quantum dot