Optical injection of spin and pseudospin polarization and current in van der Waals layered structures


Grant Data
Project Title
Optical injection of spin and pseudospin polarization and current in van der Waals layered structures
Duration
36
Start Date
2014-10-01
Completion Date
2017-09-30
Amount
900258
Conference Title
Presentation Title
Keywords
Van der Waals heterostructure, transition metal dichalcogenid, 2D crystals, spin, valley
Discipline
Physics
Sponsor
RGC General Research Fund (GRF)
HKU Project Code
17305914
Grant Type
General Research Fund (GRF)
Funding Year
2014/2015
Status
On-going
Objectives
2 Explore schemes for optical generation of spin and pseudospin polarizations in van der Waals layered structures; explore schemes for realizing spin dependent interlayer hopping of carriers using optical controls and the control of spin currents across the layered structures; investigate the generation of spin and pseudospin polarization through the control of interlayer excitons. 3 Investigate schemes for direct generation of spin and pseudospin currents in transition metal dichalcogenides monolayers and their van der Waals layered structures; investigate two-photon transition matrix elements and two-photon absorption processes; investigate the injection of ballistic spin and valley currents using the quantum interference by one-photon and two-photon processes in transition metal dichalcogenides monolayer and their van der Waals layered structures.