Surface effects on thermoelectric properties of metallic and semiconducting nanowires
Danny Kojda, Rüdiger Mitdank, Stefan Weidemann, Anna Mogilatenko, Zhi Wang, Johannes Ruhhammer, Michael Kroener, William Töllner, Peter Woias, Kornelius Nielsch and Saskia F. Fischer
Article first published online: 14 OCT 2015 | DOI: 10.1002/pssa.201532464
Combined thermoelectrical, structural and chemical characterisation of individual metallic and semiconducting nanowires is presented. In the temperature range between 4.2 K and room temperature the thermoelectrical properties are determined. Transmission electron microscopy yields the structural properties, the chemical composition and the morphology of the nanowires. This comprehensive study unambiguously allows identifying surface effects on the thermoelectric properties and scattering mechanisms for electrons and phonons.