Zeeman Splitting and Inverted Polarization of Biexciton Emission in Monolayer WS2

Abstract

We investigate the magnetic-field-induced splitting of biexcitons in monolayer WS${}_2$ using polarization-resolved photoluminescence spectroscopy in out-of-plane magnetic fields up to 30 T. The observed $g$ factor of the biexciton amounts to $-3.89$, closely matching the $g$ factor of the neutral exciton. The biexciton emission shows an inverted circular field-induced polarization upon linearly polarized excitation, i.e. it exhibits preferential emission from the high-energy peak in a magnetic field. This phenomenon is explained by taking into account the configuration of the biexciton constituents in momentum space and their respective energetic behavior in magnetic fields. Our findings reveal the critical role of dark excitons in the composition of this many-body state.

References in corpus (21)

• Observation of giant bandgap renormalization and excitonic effects in a monolayer transition metal dichalcogenide semiconductor
• Tightly bound excitons in monolayer WSe2
• Probing Excitonic Dark States in Single-layer Tungsten Disulfide
• Magnetic Control of Valley Pseudospin in Monolayer WSe2
• Valley Zeeman Effect in Elementary Optical Excitations of a Monolayer WSe2
• Breaking of valley degeneracy by magnetic field in monolayer MoSe2
• Valley Splitting and Polarization by the Zeeman Effect in Monolayer MoSe2
• Charged excitons in monolayer WSe${}_2$: experiment and theory
• Improved fidelity of triggered entangled photons from single quantum dots
• Valley-spin polarized Landau levels in a monolayer semiconductor
• Direct exciton emission from atomically thin transition metal dichalcogenide heterostructures near the lifetime limit
• Magneto-optics in transition metal diselenide monolayers
• Probing the spin-polarized electronic band structure in monolayer transition metal dichalcogenides by optical spectroscopy
• Optical investigation of monolayer and bulk tungsten diselenide (WSe${}_2$) in high magnetic fields
• Excitonic valley effects in monolayer WS${}_2$ under high magnetic fields
• Cascaded emission of single photons from the biexciton in monolayered WSe2
• Room temperature observation of biexcitons in exfoliated WS2 monolayers
• Excitons and trions in monolayer transition metal dichalcogenides: A comparative study between the multiband model and the quadratic single-band model
• Observation of intervalley biexcitonic optical Stark effect in monolayer WS2
• Marrying excitons and plasmons in monolayer transition-metal dichalcogenides
• Magneto photoluminescence measurements of tungsten disulphide monolayers

Cited by in corpus (34)

• Revealing the Biexciton and Trion-exciton Complexes in BN Encapsulated WSe2
• Enhanced Light-Matter Interaction in Two-Dimensional Transition Metal Dichalcogenides
• Electroluminescence from multi-particle exciton complexes in transition metal dichalcogenide semiconductors
• Emerging Photoluminescence from the Dark-Exciton Phonon Replica in Monolayer WSe2
• Filtering the photoluminescence spectra of atomically thin semiconductors with graphene
• Optical properties of charged excitons in two-dimensional semiconductors
• Momentum-Dark Intervalley Exciton in Monolayer Tungsten Diselenide Brightened via Chiral Phonon
• Direct Observation of Gate Tunable Dark Trions in Monolayer WSe2
• Guide to optical spectroscopy of layered semiconductors
• Energy spectrum of two-dimensional excitons in a non-uniform dielectric medium
• Nonlinear quantum optics with trion-polaritons in 2D monolayers: conventional and unconventional photon blockade
• Exciton states in monolayer MoSe2 and MoTe2 probed by upconversion spectroscopy
• Excitonic complexes in $n$-doped WS${}_2$ monolayer
• Magnetooptics of layered two-dimensional semiconductors and heterostructures: progress and prospects
• Polariton interactions in microcavities with atomically thin semiconductor layers
• Neutral and charged dark excitons in monolayer WS${}_2$
• Dark exciton-exciton annihilation in monolayer WSe${}_2$
• Highly Sensitive, Fast Graphene Photodetector with Responsivity $>10^6$ A/W Using Floating Quantum Well Gate
• Coupled Valence Carrier and Core-Exciton Dynamics in WS${}_2$ Probed by Few-Femtosecond Extreme Ultraviolet Transient Absorption Spectroscopy
• Inter-layer charge transport controlled by exciton-trion coherent coupling
• Astability versus Bistability in van der Waals Tunnel Diode for Voltage Controlled Oscillator and Memory Applications
• Excitonic Complexes and Emerging Interlayer Electron-Phonon Coupling in BN Encapsulated Monolayer Semiconductor Alloy: WS0.6Se1.4
• Direct Measurement of Biexcitons in Monolayer WS2
• Controlling valley splitting and Polarization of dark- and bi-excitons in monolayer WS${}_2$ by a tilted magnetic field
• Probing biexciton in monolayer WS${}_2$ through controlled many-body interaction
• Light-matter coupling and non-equilibrium dynamics of exchange-split trions in monolayer WS2
• Trion-trion annihilation in monolayer WS${}_2$
• Optical fingerprint of bright and dark localized excitonic states in atomically thin 2D materials
• Theory of the Coherent Response of Magneto-Excitons and Magneto-Biexcitons in Monolayer Transition Metal Dichalcogenides
• Many-Body Effect of Mesoscopic Localized States in MoS${}_2$ Monolayer
• Tensile strain induced brightening of momentum forbidden dark exciton in WS${}_2$
• Magnetically tunable exciton valley coherence in monolayer WS${}_2$ mediated by the electron-hole exchange and exciton-phonon interactions
• Extremely high excitonic $g$-factors in 2D crystals by alloy-induced admixing of band states
• Two-dimensional Ga${}_2$O${}_3$ glass: a large scale passivation and protection material for monolayer WS${}_2$