Transport properties of antimony nanowires

Abstract

This paper reports the temperature dependence of the resistivity and the longitudinal and transverse magnetoresistance of antimony quantum wires with diameters ranging from 200 down to 10 nm. The samples were prepared in porous anodic alumina host materials using the vapor-phase technique. A theoretical calculation of the band structure of Sb nanowires is presented and a transport model for nanowire systems is used to explain the measured temperature dependence of the resistivity, showing both classical and quantum finite-size effects. The magnetoresistance is quadratic at low fields. In the 200 nm wires, the low-temperature (TϽ50 K) longitudinal magnetoresistance exhibits a maximum at the magnetic field where the cyclotron radius roughly corresponds to the wire radius. Surface scattering dominates below that field, and bulklike scattering dominates above it. In the narrower wires, the low-temperature ͑below 10 K for 50 nm wires and below 40 K for 10 nm wires͒ magnetoresistance shows a steplike feature at the critical magnetic field where the magnetic length equals the wire diameter, as was the case for bismuth wires. This phenomenon is independent of the effective masses, depending only on the geometry of the nanowires and on the magnetic flux in the wire, and it is therefore attributed to a localization effect.

Large-scale synthesis of antimony nanobelt bundles

“…Recently, antimony nanowires and nanowire arrays have been created in anodic alumina membranes using deposition technique [12,13], and Dresselhaus et al, have investigated their distinct transport properties [12]. More recently, antimony nanotubes have been also prepared [14].…”

Antimony Nanowire Arrays Fabricated by Pulsed Electrodeposition in Anodic Alumina Membranes

“…[21] Antimonides, such as Bi 1±x Sb x , CoSb 3 and b-Zn 4 Sb 3 , are very important thermoelectric materials. [23,24] And yet, the preparation of single-crystalline antimony nanowires is still a challenge. [22] Recently, amorphous (or polycrystalline) antimony nanowires were prepared in anodic alumina membranes using the vapor-phase deposition technique and their special transport properties were also discussed.…”

PHONON DRAG, CARRIER DIFFUSIVE THERMOELECTRIC POWER AND SEMICONDUCTING RESISTIVITY BEHAVIOR OF Zn NANOWIRES

“…The peaks in the electronic density of states that are the signature of a 1D system result in an increase in thermopower. However, the localization e®ects have also been observed in Bi and Sb nanowire systems 3,6,7 and are expected to increase the electrical resistance with a much more modest accompanying enhancement of thermopower. The resistivity of Zn Vycor composite nanowire decreases linearly with temperature, 5 this linear T À1 behavior shows strong possibility of small polaron conduction in this material.…”