Trions in Anisotropic van der Waals Magnet CrSBr

Attend a scientific seminar exploring the theoretical study of trions in anisotropic van der Waals magnet CrSBr presented by Dr. Marina Semina from the Ioffe Institute. Discover how the optical response of CrSBr bilayers is determined by excitons that can be described using the Wannier-Mott model, and learn about the formation of charged excitons (trions) in the presence of doping. The presentation covers research findings on excitons and trions in one- and two-layer structures with highly anisotropic effective mass, examining both Coulomb potential and self-consistent dielectric screening approaches. Follow along as Dr. Semina explains how calculations were performed using variational methods and direct numerical diagonalization of the Hamiltonian, revealing how increasing anisotropy of effective masses affects binding energies of spatially indirect excitons and trions. This 64-minute seminar, organized by the Abrikosov Center for Theoretical Physics, presents research supported by the Russian Science Foundation grant No. 23-12-00142.