Metasurfaces for Valleytronics

摘要

Modern electronics is inexorably approaching the limit of Moore's law, inspiring intense research in alternative areas-such as spintronics and valleytronics, in which spins or pseudospins, rather than electronic charges, are used as information carriers. Recent successes in materials science, such as the isolation of atomically thin transition metal dichalcogenides (TMDs), provide exciting opportunities to advance these concepts. In work published this year, we demonstrated the coupling of such materials with optical metasurfaces for sorting and controlling excitons for valleytronics.