Third-Order Optical Nonlinearity in Two-Dimensional Transition Metal Dichalcogenides<xref rid="ctp_70_3_344_fn1" ref-type="fn">*</xref><fn id="ctp_70_3_344_fn1"><label>*</label><p>Supported in part by Laboratory of Photonics and Quantum Measurements (LPQM) at EPFL and European Graphene Flagship under Grant No. 696656, as well as Research Deputy of Sharif University of Technology</p></fn>

Third-Order Optical Nonlinearity in Two-Dimensional Transition Metal Dichalcogenides**

Supported in part by Laboratory of Photonics and Quantum Measurements (LPQM) at EPFL and European Graphene Flagship under Grant No. 696656, as well as Research Deputy of Sharif University of Technology

Khorasani Sina^†

Illustration of valley-spin coupling in WSe₂ as an example, based on the 6-band TB model.^[50] The effect of trigonal warping is seen to be strongly pronounced for the valence band, where K and K′ behave very differently.