Gmitra, Martin and Fabian, Jaroslav (2015) Graphene on transition-metal dichalcogenides: A platform for proximity spin-orbit physics and optospintronics. PHYSICAL REVIEW B, 92 (15): 155403. ISSN 2469-9950, 2469-9969
Full text not available from this repository.Abstract
Hybrids of graphene and two-dimensional transition-metal dichalcogenides (TMDCs) have the potential to bring graphene spintronics to the next level. As we show here by performing first-principles calculations of graphene on monolayer MoS2, there are several advantages of such hybrids over pristine graphene. First, Dirac electrons in graphene exhibit a giant global proximity spin-orbit coupling, without compromising the semimetallic character of the whole system at zero field. Remarkably, these spin-orbit effects can be very accurately described by a simple effective Hamiltonian. Second, the Fermi level can be tuned by a transverse electric field to cross the MoS2 conduction band, creating a system of coupled massive and massless electron gases. Both charge and spin transport in such systems should be unique. Finally, we propose to use graphene/TMDC structures as a platform for optospintronics, in particular, for optical spin injection into graphene and for studying spin transfer between TMDCs and graphene.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | VALLEY POLARIZATION; MONOLAYER; MOS2; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Jaroslav Fabian |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 16 May 2019 12:37 |
| Last Modified: | 16 May 2019 12:37 |
| URI: | https://pred.uni-regensburg.de/id/eprint/4635 |
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