Many-Body Effect of Mesoscopic Localized States in MoS${}_2$ Monolayer

Abstract

Transition metal dichalcogenide monolayers provide an emerging material system to implement quantum photonics with intrinsic two-dimensional excitons or embedded zero-dimensional localized states. Here we demonstrate the mesoscopic localized states between two- and zero- dimensions, which is a many-body system with electron-electron Coulomb interactions. A fine structure splitting is observed, which is similar to quantum dots. Meanwhile the polarization is changed by the magnetic field, due to the nature of two-dimensional monolayers. Furthermore, a large quadratic diamagnetism with a coefficient of around $100\mu eV/{\mathrm{T}}^2$ is observed, as a unique consequence of the mesoscopic scale. The many-body effect also results in the emission energy variation and linewidth narrowing in the spectrum, which corresponds well to the theoretical analysis. These unique properties indicate the great potential of mesoscopic localized states in many-body physics and quantum photonics.

14 pages, 4 figures

References in corpus (11)

• Chaotic Dirac billiard in graphene quantum dots
• Valley Dependent Optoelectronics from Inversion Symmetry Breaking
• Spin qubits in graphene quantum dots
• Nuclear spin physics in quantum dots: an optical investigation
• Tuning of energy levels and optical properties of graphene quantum dots
• Brightening of dark excitons in monolayers of semiconducting transition metal dichalcogenides
• Electron-Hole Crossover in Graphene Quantum Dots
• The Fock-Darwin States of Dirac Electrons in Graphene-based Artificial Atoms
• Spin States in Graphene Quantum Dots
• Longitudinal wave function control in single quantum dots with an applied magnetic field
• Signatures of defect-localized charged excitons in the photoluminescence of monolayer molybdenum disulfide

Cited by in corpus (4)

• Strong Triplet-Exciton-LO-Phonon Coupling in Two-Dimensional Layered Organic-Inorganic Hybrid Perovskite Single Crystal Microflakes
• Coupling of MoS${}_2$ Excitons with Lattice Phonons and Cavity Vibrational Phonons in Hybrid Nanobeam Cavities
• Hot Polarons with Trapped Excitons and Octahedra-Twist Phonons in CH3NH3PbBr3 Hybrid Perovskite Nanowires
• Single charge control of localized excitons in heterostructures with ferroelectric thin films and two-dimensional transition metal dichalcogenides