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- W4313532882 abstract "Orbitronics has recently emerged as a very active research topic after several proposals aiming to exploit the orbital degree of freedom for charge-free electronics. In this communication, we investigate orbital transport in selected two-dimensional systems to better understand which parameters govern the intra-atomic and inter-atomic contributions to the orbital Hall effect. We study the impact of the gap, the role of the materials' topology and the influence of the disorder on spin and orbital Hall transport. Starting from the Kane-Mele model, we describe how the orbital moment behaves depending on the material's topology and clarify the influence of the gap on the orbital Hall conductivity. We then extend the study to realistic topologically trivial and non-trivial materials, and find that the topology has little qualitative influence on the orbital Hall conductivity. In contrast, we observe that the energy dispersion has a more dramatic impact, especially in the presence of disorder. Remarkably, our results suggest that the intra-atomic orbital Hall current is more robust against scattering than the inter-atomic one, without further impact of the topological properties of the system under consideration." @default.
- W4313532882 created "2023-01-06" @default.
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- W4313532882 date "2023-01-03" @default.
- W4313532882 modified "2023-09-28" @default.
- W4313532882 title "Orbital Hall physics in two-dimensional Dirac materials" @default.
- W4313532882 doi "https://doi.org/10.48550/arxiv.2301.01126" @default.
- W4313532882 hasPublicationYear "2023" @default.
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