Tuning valley polarization in a WSe2 monolayer with a tiny magnetic field

T. Smoleński, M. Goryca, M. Koperski +5

In monolayers of semiconducting transition metal dichalcogenides, the light helicity (${\sigma }^{+}$ or ${\sigma }^{-}$) is locked to the valley degree of freedom, leading to the possibility of optic…