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DS: Fachverband Dünne Schichten
DS 4: 2D Materials and their Heterostructures II (joint session DS/HL)
DS 4.10: Vortrag
Dienstag, 18. März 2025, 12:30–12:45, H3
The effect of a perpendicular electric field on charge-spin interconversion coefficients in proximitized graphene on 1T-TaS2 monolayer — •Juraj Mnich1, Marko Milivojević2,3, and Martin Gmitra1,4 — 1Institute of Physics, P.J.Šafárik University in Košice, 04001 Košice, Slovakia — 2Faculty of Physics, University of Belgrade, 11001 Belgrade, Serbia — 3Institute of Informatics, SAS, 84507 Bratislava, Slovakia — 4Institute of Experimental Physics, SAS, 04001 Košice, Slovakia
The proximity-induced spin-orbit coupling and exchange interactions in the graphene-based heterostructures provides an effective way to manipulate with charge-spin interconversion coefficients. In the talk we focused on charge-spin interconversion in bilayer and trilayer heterostructures of 1T-TaS2 and graphene. By modulating the temperature, we can access the charge density wave phase and switch between the magnetic and non-magnetic phases of 1T-TaS2 affecting consequently the graphene electrons. Using linear response theory we showed the dependence of charge-spin interconversion coefficients on a perpendicular applied electric field. For the specific configurations of the 1T-TaS2 and graphene we observed a change in both the sign and the magnitude of the non-equilibrium spin density as a response to the perpendicular electric field. This result indicates a possibility of using electric fields as a tool to control the direction of spin density.
This work was supported by the APVV-SK-CZ-RD-21-0114 and the EU NextGenerationEU through the Recovery and Resilience Plan for Slovakia under the project No. 09I03-03-V05-00008.
Keywords: spin-charge interconversion; proximity effect