title: Intervalley scattering and localization behaviors of spin-valley coupled Dirac fermions.
abstract: We study the quantum diffusive transport of multivalley massive Dirac cones, where time-reversal symmetry requires opposite spin orientations in inequivalent valleys. We show that the intervalley scattering and intravalley scattering can be distinguished from the quantum conductivity that corrects the semiclassical Drude conductivity, due to their distinct symmetries and localization trends. In immediate practice, it allows transport measurements to estimate the intervalley scattering rate in hole-doped monolayers of group-VI transition metal dichalcogenides (e.g., molybdenum dichalcogenides and tungsten dichalcogenides), an ideal class of materials for valleytronics applications. The results can be generalized to a large class of multivalley massive Dirac systems with spin-valley coupling and time-reversal symmetry.
authors: Department of Physics and Centre of Theoretical and Computational Physics, The University of Hong Kong, Pokfulam Road, Hong Kong, China.
authors: Hai-Zhou
authors: HZ
authors: Lu
authors: Wang
authors: W
authors: Yao
authors: Di
authors: D
authors: Xiao
authors: Shun-Qing
authors: SQ
authors: Shen