Issue 23, 2025

Proximity effects in the graphene–Co3Sn2S2 interface

Abstract

In graphene, the linear dependence of the density of states on energy and the low density of these valence band states around the Fermi energy make this material an ideal candidate for the observation of the proximity effects, when it is placed in contact with other functional materials. In this work, we explore the possible effects of the magnetic proximity and charge transfer on the interfacial properties of a graphene layer adsorbed on the (001) surface of Co3Sn2S2, the bulk phase of which is known as a topological quasi-2D semimetal in the half-metallic ferromagnetic state. Both counterparts mutually influence the properties of the heterostructure. Thus, formation of the interface allows tuning the electronic and magnetic properties of graphene over a wide range depending on the composition of the Co3Sn2S2 interface layer. A synergy between graphene and Co3Sn2S2(001) enhances the perpendicular magnetic anisotropy energy of the systems, which is highly promising for the development of new magnetic recording media. As a reference for future experimental studies, the C 1s core-level shifts and C K near-edge X-ray absorption fine structure spectra are calculated for all considered cases.

Graphical abstract: Proximity effects in the graphene–Co3Sn2S2 interface

Article information

Article type
Paper
Submitted
21 Nov 2024
Accepted
21 Apr 2025
First published
24 Apr 2025
This article is Open Access
Creative Commons BY license

J. Mater. Chem. C, 2025,13, 11789-11799

Proximity effects in the graphene–Co3Sn2S2 interface

J. Zhang, B. Paulus, Y. Dedkov and E. Voloshina, J. Mater. Chem. C, 2025, 13, 11789 DOI: 10.1039/D4TC04933K

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