Diameter Dependence of the Transport Properties of Antimony Telluride Nanowires

作者：Zuev Yuri M; Lee Jin Seok; Galloy Clement; Park Hongkun; Kim Philip^*

来源：Nano Letters, 2010, 10(8): 3037-3040.

DOI：10.1021/nl101505q

• Thermoelectric power
• Sb(2)Te(3)
• topological insulator

We report measurements of electronic, thermoelectric, and galvanomagnetic properties of individual single crystal antimony telluride (Sb(2)Te(3)) nanowires with diameters in the range of 20-100 nm. Temperature-dependent resistivity and thermoelectric power (TOP) measurements indicate hole dominant diffusive thermoelectric generation with an enhancement of the TOP for smaller diameter wires up to 110 mu V/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.

• 出版日期2010-8