Diameter Dependence of the Transport Properties of Antimony Telluride Nanowires

Details Diameter Dependence of the Transport Properties of Antimony Telluride Nanowires Diameter Dependence of the Transport Properties of Antimony Telluride Nanowires

2010-08-13

arxiv.org/abs/1008.2350v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

10.1021/nl101505q

We report measurements of electronic, thermoelectric, and galvanomagnetic properties of individual single crystal antimony telluride (Sb2Te3) 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 uV/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.

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