Fig. 2 | Nature Communications

Fig. 2

From: Zeeman splitting via spin-valley-layer coupling in bilayer MoTe2

Fig. 2

Zeeman splitting and PL polarization in bilayer MoTe2. a, b Off-resonant polarization-resolved PL spectra taken at −7, 0, and +7 T at 2 K with an excitation energy of 1.560 eV (795 nm) in monolayer MoTe2 (a) for reference and bilayer MoTe2 (b). The excitation is set to σ + circular polarization. The detection polarization is configured to σ + (black solid lines) and σ (red solid lines) circular polarization. The PL intensity of the bilayer is one order of magnitude smaller than that in the monolayer due to higher symmetry of the bilayer. Here the PL spectra is normalized by emission maximum for each particular magnetic field and offset for better visualization. c, d The Zeeman splitting (c) and PL polarization (d) of the neutral exciton (peak A 2) in bilayer MoTe2 (red symbols and lines) vs. magnetic field at 2 K. The inset shows the PL polarization at different temperature at +7 T. The black symbols and lines are results of the monolayer (peak A 1) for reference. The error bars are calculated from Lorentzian fit of the spectral lines

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