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Diameter dependence of the transport properties of antimony telluride nanowires
- Issue Date
- Aug-2010
- Publisher
- American Chemical Society
- Keywords
- Sb2Te3; Thermoelectric power; topological insulator
- Citation
- Nano Letters, v.10, no.8, pp 3037 - 3040
- Pages
- 4
- Journal Title
- Nano Letters
- Volume
- 10
- Number
- 8
- Start Page
- 3037
- End Page
- 3040
- ISSN
- 1530-6984
1530-6992
- Abstract
- We report measurements of electronic, thermoelectric, and galvanomagnetic properties of individual single crystal antimony telluride (Sb 2Te3) nanowires with diameters in the range of 20-100 nm. Temperature-dependent resistivity and thermoelectric power (TEP) measurements indicate hole dominant diffusive thermoelectric generation with an enhancement of the TEP for smaller diameter wires up to 110 μV/K at T = 300 K. We measure the magnetoresistance in magnetic fields both parallel and perpendicular to the nanowire [110] axis, where strong anisotropic positive magnetoresistance behavior was observed. © 2010 American Chemical Society.
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