Pump-driven opto-magnetic properties in semiconducting transition-metal dichalcogenides: an analytical model

Abstract

Single-layer transition-metal dichalcogenides provide an unique intrinsic entanglement between the spin/valley/orbital degrees of freedom and the polarization of scattered photons. This scenario gives rise to the well-assessed optical dichroism observed by using both steady and time-resolved probes. In this paper we provide a compact analytical modelling of the onset of a finite Faraday/Kerr optical rotation upon shining with a circularly polarized light. We identify different optical features displaying optical rotation at different characteristic energies, and we describe in an analytical framework the time-dependence of their intensities as a consequence of the main spin-conserving and spin-flip processes.

References in corpus (46)

• Atomically thin MoS2: A new direct-gap semiconductor
• Coupled spin and valley physics in monolayers of MoS2 and other group-VI dichalcogenides
• Control of valley polarization in monolayer MoS2 by optical helicity
• Valley polarization in MoS2 monolayers by optical pumping
• Emerging Device Applications for Semiconducting Two-Dimensional Transition Metal Dichalcogenides
• MoS_2 as an ideal material for valleytronics: valley-selective circular dichroism and valley Hall effect
• The Valley Hall Effect in MoS2 Transistors
• Optical modulators with two-dimensional layered materials
• k.p theory for two-dimensional transition metal dichalcogenide semiconductors
• Three-band tight-binding model for monolayers of group-VIB transition metal dichalcogenides
• Electronic structures and theoretical modelling of two-dimensional group-VIB transition metal dichalcogenides
• Electrical Tuning of Valley Magnetic Moment via Symmetry Control
• Strain engineering in semiconducting two-dimensional crystals
• Photocarrier relaxation in two-dimensional semiconductors
• Robust optical emission polarization in MoS2 monolayers through selective valley excitation
• Monolayer MoS2: trigonal warping, "Γ-valley", and spin-orbit coupling effects
• Tight-binding model and direct-gap/indirect-gap transition in single-layer and multi-layer MoS${}_2$
• Carrier and polarization dynamics in monolayer MoS2
• Band nesting and the optical response of two-dimensional semiconducting transition metal dichalcogenides
• Valley depolarization due to inter- and intra-valley electron-hole exchange interactions in monolayer MoS${}_2$
• Exciton band structure of monolayer MoS2
• Long-lived nanosecond spin relaxation and spin coherence of electrons in monolayer MoS_2 and WS_2
• Exciton Valley Dynamics probed by Kerr Rotation in WSe2 Monolayers
• Valley Carrier Dynamics in Monolayer Molybdenum Disulphide from Helicity Resolved Ultrafast Pump-probe Spectroscopy
• Effective lattice Hamiltonian for monolayer MoS2 : Tailoring electronic structure with perpendicular electric and magnetic fields
• \textit{Ab-initio} Tight-Binding Hamiltonian for Transition Metal Dichalcogenides
• Generation and evolution of spin-, valley- and layer-polarized excited carriers in inversion-symmetric WSe2
• Theory of strain in single-layer transition metal dichalcogenides
• Ab initio calculations of ultra-short carrier dynamics in 2D materials: valley depolarization in single-layer WSe${}_2$
• Momentum dependence of spin-orbit interaction effects in single-layer and multi-layer transition metal dichalcogenides
• A tight-binding model for MoS${}_2$ monolayers
• Imaging Spin Dynamics in Monolayer WS2 by Time-Resolved Kerr Rotation Microscopy
• Long valley lifetime of free carriers in monolayer WSe2
• Bright excitons with negative-mass electrons
• Direct Observation of Valley Coupled Topological Current in MoS${}_2$
• Magnetooptics of layered two-dimensional semiconductors and heterostructures: progress and prospects
• Spin-resolved optical conductivity of two-dimensional group-VIB transition-metal dichalcogenides
• Strong Valley Zeeman Effect of Dark Excitons in Monolayer Transition Metal Dichalcogenides in a Tilted Magnetic Field
• Magneto-optical Kerr effect in spin split two-dimensional massive Dirac materials
• Magneto-optical Kramers-Kronig analysis
• Valley Dynamics of Excitons in Monolayer Dichalcogenides
• Layer and orbital interference effects in photoemission from transition metal dichalcogenides
• Gap states and valley-spin filtering in transition metal dichalcogenide monolayers
• Decrypting the cyclotron effect in graphite using Kerr rotation spectroscopy
• Polarization-resolved broadband time-resolved optical spectroscopy for complex materials: application to the case of MoTe${}_2$ polytypes
• Comparative Analysis of Tight-Binding models for Transition Metal Dichalcogenides