Exciton interaction induced spin splitting in MoS$_2$ monolayer
Exciton interaction induced spin splitting in MoS$_2$ monolayer
By pumping nonresonantly a MoS$_2$ monolayer at $13$ K under a circularly polarized cw laser, we observe exciton energy redshifts that break the degeneracy between B excitons with opposite spin. The energy splitting increases monotonically with the laser power reaching as much as $18$ meV, while it diminishes with the …