Magnetotransport and thermopower of single Bi0.92Sb0.08 nanowires

Heiderich S, Toellner W, Boehnert T, Gluschke JG, Zastrow S, Schumacher C, Pippel E, Nielsch K (2013)

Publication Type: Journal article

Publication year: 2013

Journal

Physica Status Solidi-Rapid Research Letters Wiley-VCH Verlag

Book Volume: 7

Pages Range: 898-902

Journal Issue: 10

DOI: 10.1002/pssr.201308004

Abstract

This Letter reports on temperature-dependent electrical measurements of single Bi0.92Sb0.08 nanowires with diameters between 220 nm and 350 nm. The magnetoresistance effect under transverse magnetic fields of ±2 T and the Seebeck coefficient S are measured in the temperature range of 50-300 K. Additionally, the influence of an annealing step on the transport properties is investigated. The as-prepared wires show heterogeneous temperature dependent behavior, whereas the annealed wires show semiconductive behavior. The room temperature value of the resistivity of the wires is between 2 × 10^-6 Ωm and 1.4 × 10^-5 Ωm. Magnetoresistance effects up to 15% at 50 K for the as-prepared nanowires and up to 23% for the annealed wires are observed. The temperature dependent Seebeck coefficient of single wires is determined. The as-prepared wires show a rise of the absolute value of S with temperature and it seems to saturate at room temperature. In contrast to this, the annealed wires show a linear increase of S. The room temperature values of S are -55 μV K^-1 and -45 μV K^-1, respectively. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Involved external institutions

Universität Hamburg (UHH)

Germany (DE) Max-Planck-Institut für Mikrostrukturphysik (MSP) / Max Planck Institute for Microstructure Physics

Germany (DE)

How to cite

APA:

Heiderich, S., Toellner, W., Boehnert, T., Gluschke, J.G., Zastrow, S., Schumacher, C.,... Nielsch, K. (2013). Magnetotransport and thermopower of single Bi0.92Sb0.08 nanowires. Physica Status Solidi-Rapid Research Letters, 7(10), 898-902. https://dx.doi.org/10.1002/pssr.201308004

MLA:

Heiderich, Sonja, et al. "Magnetotransport and thermopower of single Bi0.92Sb0.08 nanowires." Physica Status Solidi-Rapid Research Letters 7.10 (2013): 898-902.

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