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• W2968178032 endingPage "143654" @default.
• W2968178032 startingPage "143654" @default.
• W2968178032 abstract "Microwave-assisted solvothermal route has been followed to synthesize Sb2Te3 nanomaterial. The morphology and topography of the material have been studied in FESEM and AFM measurements respectively. The optical band gap of the material is found to be ~ 0.25 eV as measured in IR spectroscopy. Temperature dependent resistivity of the nanostructure shows thermal activation behavior in the high temperature region as well as it follows 3D Variable Range Hopping mechanism in the moderate temperature region. Electron-electron interaction and quantum interference dominated upturn in the resistivity is observed at T < 24 K. Low field magnetoconductivity (MC) shows disorder induced weak localization (WL) which makes over to weak antilocalization (WAL) at T ≥ 4 K. MC after post annealing of the sample shows WAL behavior at T < 4 K also. Quantum correction to the low field magnetoconductivity of the material follows Hikami-Larkin-Nagaoka (HLN) equation. The obtained parameters of the HLN equation indicate that the system follows the 2D conduction mechanism and presence of a single conduction channel at low temperature. High field MR exhibits linear and positive magnetoresistance (LPMR) which suggests the survival of robust topological surface state conduction in the nanostructured bulk Sb2Te3 topological insulator." @default.
• W2968178032 created "2019-08-22" @default.
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• W2968178032 date "2019-12-01" @default.
• W2968178032 modified "2023-09-30" @default.
• W2968178032 title "Weak antilocalization in Sb2Te3 nano-crystalline topological insulator" @default.
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• W2968178032 doi "https://doi.org/10.1016/j.apsusc.2019.143654" @default.
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