Temperature and Thickness Dependence of the Thermal Conductivity in 2D Ferromagnet Fe₃GeTe₂.

ABSTRACT: The emergence of symmetry-breaking orders such as ferromagnetism and the weak interlayer bonding in van der Waals materials offers a unique platform to engineer novel heterostructures and tune transport properties like thermal conductivity. Here, we report the experimental and theoretical study of the cross-plane thermal conductivity, κ_⊥, of the van der Waals two-dimensional (2D) ferromagnet Fe₃GeTe₂. We observe an increase in κ_⊥ with thickness, indicating a diffusive transport regime with ballistic contributions. These results are supported by the theoretical analyses of the accumulated thermal conductivity, which show an important contribution of phonons with mean free paths between 10 and 200 nm. Moreover, our experiments show a reduction of κ

SUBMITTER: Claro MS 

PROVIDER: S-EPMC10614195 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature