Fig. 5

Magneto-optical spectroscopy of monolayer MoTe\({}_{2}\). a Normalized intensity map of the field-dependent transmission spectra through monolayer MoTe\({}_{2}\), showing the A:\(1s\) ground state exciton and the A:\(2s\) excited state. Due to a small (<5 %) polarization leakage, a weak trace of the oppositely polarized \(1s\) state is also visible. b Energies of the excitons in \({\sigma }^{\pm }\) polarization. c Averaged exciton energies showing diamagnetic shifts. Red lines show calculated energies (see text). Parameters: \({m}_{\mathrm{r}}=0.36\ {m}_{0}\), \({r}_{0}=6.4\) nm, \(\kappa =4.4\), and \({E}_{\mathrm{gap}}=1.352\) eV. Inset: Expanded plot of the \(1s\) exciton energy, showing its very small quadratic diamagnetic shift. d The valley Zeeman splitting of the \(1s\) and \(2s\) excitons; dashed lines show linear fits