Three-particle Complexes in Two-Dimensional Semiconductors

Abstract

We map the three-body problem in two dimensions onto one particle in a three dimensional potential treatable by a purposely-developed boundary-matching-matrix method. We evaluate binding energies of trions $X^{\pm }$, excitons bound by a donor/acceptor charge $X^{D/A}$, and overcharged acceptors/donors in two-dimensional atomic crystals of transition metal dichalcogenides, where interaction between charges features logarithmic behavior at intermediate distances. We find that dissociation energy of $X^{\pm }$ is, typically, much larger than that of localised exciton complexes, so that trions are more resilient to heating, despite that their recombination line in optics is much less red-shifted from the exciton line, as compared to $X^{D/A}$

5.1 pages, 3 figures,+ supplementary material (5 pages); Improved numerics; Monte Carlo data added; Published version

References in corpus (11)

• Valley polarization in MoS2 monolayers by optical pumping
• Integrated Circuits Based on Bilayer MoS2 Transistors
• Quasiparticle band structures and optical properties of strained monolayer MoS2 and WS2
• Two dimensional semiconductors with possible high room temperature mobility
• Robust optical emission polarization in MoS2 monolayers through selective valley excitation
• Probing excitonic states in ultraclean suspended two-dimensional semiconductors by photocurrent spectroscopy
• Continuum variational and diffusion quantum Monte Carlo calculations
• Jastrow correlation factor for atoms, molecules, and solids
• Exciton Valley Dynamics probed by Kerr Rotation in WSe2 Monolayers
• Exciton and biexciton energies in bilayer systems
• Spin-valley relaxation and quantum transport regimes in two-dimensional transition metal dichalcogenides

Cited by in corpus (13)

• k.p theory for two-dimensional transition metal dichalcogenide semiconductors
• Many-Body Theory of Trion Absorption Features in Two-Dimensional Semiconductors
• Atomically thin mirrors made of monolayer semiconductors
• Optical response of monolayer, few-layer and bulk tungsten disulfide
• Diffusion quantum Monte Carlo study of excitonic complexes in two-dimensional transition-metal dichalcogenides
• Collective Excitations in 2D Materials
• Upconverted electroluminescence via Auger scattering of interlayer excitons in van der Waals heterostructures
• Diffusion quantum Monte Carlo and GW study of the electronic properties of monolayer and bulk hexagonal boron nitride
• Light-matter coupling and non-equilibrium dynamics of exchange-split trions in monolayer WS2
• Excited-State Trions in Two Dimensional Materials
• Jastrow correlation factor for periodic systems
• Three-Boson Bound States in Two Dimensions
• Excitonic resonances in thin films of WSe2: From monolayer to bulk material