Theoretical study of quantum transport in two dimensional MoS2*

In this work, we calculate the quantum correction to the conductivity for disordered electrons in a two-dimensional transition metal dichalcogenide and show that it exhibits crossover from the symplectic to orthogonal universality classes. Due to the strong spin-orbit coupling, this system displays weak anti-localization behaviour in a strong magnetic field, while symmetry breaking introduces a crossover parameter, causing weak localization in a weak magnetic field. Temperature and carrier density dependence of coherence length and crossover parameter are discussed making comparisons with available experimental data.