More Research Highlights

Signatures of Electric Field and Layer Separation Effects on the Spin-Valley Physics of MoSe₂/WSe₂ Heterobilayers: From Energy Bands to Dipolar Excitons

We explored the effects of electric fields and the separation of individual layers on the spin-valley physics of van-der-Waals MoSe₂/WSe₂ heterobilayers using advanced first-principles methods. Within our recent work, we put a special focus on dipolar (interlayer) excitons – the exciton-forming electrons and holes are thereby localized in different layers –, for which multilayered van-der-Waals heterostructures provide a suitable platform to emerge.

This work has been published in Nanomaterials.

Strong Manipulation of the Valley Splitting upon Twisting and Gating in MoSe₂/CrI₃ and WSe₂/CrI₃ Van-Der-Waals Heterostructures

By means of first-principles calculations, we studied the impact of twisting and gating on the electronic properties of MoSe₂/CrI₃ and WSe₂/CrI₃ van-der-Waals heterostructures. Fitting the ab-initio bandstructures to a well-established model Hamiltonian, we demonstrate that twisting and gating provide important control knobs to strongly tune the valley splitting.

This work has been published in Physical Review B.