Electron transport and scattering mechanisms in ferromagnetic monolayer Fe3GeTe2

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Abstract

We study intrinsic charge-carrier scattering mechanisms and determine their contribution to the transport properties of the two-dimensional ferromagnet Fe3GeTe2. We use state-of-the-art first-principles calculations combined with the model approaches to elucidate the role of the electron-phonon and electron-magnon interactions in the electronic transport. Our findings show that the charge carrier scattering in Fe3GeTe2 is dominated by the electron-phonon interaction, while the role of magnetic excitations is marginal. At the same time, the magnetic ordering is shown to effect essentially on the electron-phonon coupling and its temperature dependence. This leads to a sublinear temperature dependence of the electrical resistivity near the Curie temperature, which is in line with experimental observations. The room temperature resistivity is estimated to be ~ 35 μΩ ⋅ cm which may be considered as a lower intrinsic limit for monolayer Fe3GeTe2.

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Badrtdinov, D. I., Pushkarev, G. V., Katsnelson, M. I., & Rudenko, A. N. (2023). Electron transport and scattering mechanisms in ferromagnetic monolayer Fe3GeTe2. Npj 2D Materials and Applications, 7(1). https://doi.org/10.1038/s41699-023-00413-0

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