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- W4381851475 abstract "We present a study of low temperature electron transport (resistivity, magnetoresistance and Hall coefficient) in SmB6 single crystals having different polar (100) and nonpolar (110) and (111) surfaces after mechanical polishing and chemical etching. The estimation of effective parameters for surface and bulk charge carriers allows us to conclude that surface conductivity is very sensitive to the method of surface treatment. The most pronounced change is observed for the polar (100) surface, for which the related Hall concentration of charge carriers at 2 K decreases more than by 2 orders of magnitude and the Hall mobility increases by a factor of 15 after etching these faces in diluted nitric acid. We suggest that the strong dependence of surface properties on the type of treatment may result from both topological protection, which is influenced by intrinsic defects or surface reconstruction, and band bending effects, which modulate the properties of the surface conduction layer in case of polar faces." @default.
- W4381851475 created "2023-06-25" @default.
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- W4381851475 date "2023-08-01" @default.
- W4381851475 modified "2023-09-25" @default.
- W4381851475 title "Surface conductivity in SmB6" @default.
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- W4381851475 doi "https://doi.org/10.1016/j.solidstatesciences.2023.107247" @default.
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