The nature of valley-spin filtering effect in transition metal dichalcogenide monolayers

Dominik Szczȩśniak, Sabre Kais

Published 2019-11-10Version 1

The magnetically-induced valley-spin filtering in transition metal dichalogenides promises new paradigm in information processing. Herein, the mechanism of this effect is elucidated within the metal-induced gap states concept. The filtering is shown to be primarily governed by the valley-spin polarized tunnelling processes, which yield fundamental scaling trends for valley-spin selectivity with respect to the intrinsic physics of the filter materials. The results are found to facilitate insight into the analyzed effects and provide design guidelines toward efficient valley-spin filter devices.