Intrinsic electron spin relaxation due to the D'yakonov-Perel' mechanism in monolayer MoS${}_2$

Abstract

Intrinsic electron spin relaxation due to the D'yakonov-Perel' mechanism is studied in monolayer Molybdenum Disulphide. An intervalley in-plane spin relaxation channel is revealed due to the opposite effective magnetic fields perpendicular to the monolayer Molybdenum Disulphide plane in the two valleys together with the intervalley electron-phonon scattering. The intervalley electron-phonon scattering is always in the weak scattering limit, which leads to a rapid decrease of the in-plane spin relaxation time with increasing temperature. A decrease of the in-plane spin relaxation time with the increase of the electron density is also shown.

arXiv comment6 pages, 1 figure

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• Ultrafast dynamics in monolayer TMDCs: the interplay of dark excitons, phonons and intervalley Coulomb exchange
• Observation of exciton-exciton interaction mediated valley depolarization in monolayer MoSe${}_2$
• Novel valley depolarization dynamics and valley Hall effect of exciton in mono- and bilayer MoS${}_2$
• Quenching of Intervalley Exchange Coupling in the Presence of Momentum-Dark States in TMDCs
• Influence of Defects on the Valley Polarization Properties of Monolayer MoS${}_2$ Grown by Chemical Vapor Deposition
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• Spin and Valley Noise in Two-Dimensional Dirac Materials
• Hole spin relaxation in bilayer WSe${}_2$
• A novel superconducting-velocity--tunable quasiparticle state and spin relaxation in GaAs (100) quantum wells in proximity to $s$-wave superconductor
• Impact of optically pumped non-equilibrium steady states on luminescence emission of atomically-thin semiconductor excitons
• Theory optical excitation spectra and depolarization dynamics in bilayer WS${}_2$ from viewpoint of excimers
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