Diameter dependence of the transport properties of antimony telluride nanowires.
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 (TEP) measurements indicate hole dominant diffusive thermoelectric generation with an enhancement of the TEP for smaller diameter wires up to 110 microV/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.
Zuev
Yuri M
YM
Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027, USA.
Lee
Jin Seok
JS
Galloy
Clément
C
Park
Hongkun
H
Kim
Philip
P