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- W2893634360 abstract "Using a multi-orbital tight-binding model, we have studied the edge states of zigzag silicene, germanene, and stanene nanoribbons (ZSiNRs, ZGeNRs and ZSnNRs, respectively) in the presence of the Coulomb interaction and a vertical electric field. The resulting edge states have non-linear energy dispersions due to multi-orbital effects, and the nanoribbons show induced magnetization at the edges. Owing to this non-linear dispersion, ZSiNRs, ZGeNRs and ZSnNRs may not provide superior performance in field effect transistors, as has been proposed from single-orbital tight-binding model calculations. We propose an effective low-energy model that describes the edge states of ZSiNRs, ZGeNRs, and ZSnNRs. We demonstrate that the edge states of ZGeNR and ZSnNR show anti-crossing of bands with opposite spins, even if only out-of-plane edge magnetization is present. The ability to tune the spin polarizations of the edge states by applying an electric field points to future opportunities to fabricate silicene, germanene and stanene nanoribbons as spintronics devices." @default.
- W2893634360 created "2018-10-05" @default.
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- W2893634360 date "2019-01-21" @default.
- W2893634360 modified "2023-09-27" @default.
- W2893634360 title "Influence of edge magnetization and electric fields on zigzag silicene, germanene and stanene nanoribbons" @default.
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- W2893634360 doi "https://doi.org/10.1088/1361-648x/aaf8ce" @default.
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