Journal
PHYSICAL REVIEW LETTERS
Volume 117, Issue 7, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.117.077402
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Funding
- A. v. Humboldt foundation
- DFG [GRK 1570, KO3612/1-1, SFB689]
- HFML-RU/FOM
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We control the linear polarization of emission from the coherently emitting K+ and K- valleys (valley coherence) in monolayer WS2 with an out-of-plane magnetic field of up to 25 T. The magnetic-field-induced valley Zeeman splitting causes a rotation of the emission polarization with respect to the excitation by up to 35 degrees and reduces the polarization degree by up to 16%. We explain both of these phenomena with a model based on two noninteracting coherent two-level systems. We deduce that the coherent light emission from the valleys decays with a time constant of tau(c) = 260 fs.
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