Large Thermoelectric Power Factor Enhancement Observed
in InAs Nanowires

Wu, Phillip M.; Gooth, Johannes; Zianni, Xanthippi; Svensson, Sofia Fahlvik; Gluschke, Jan Göran; Dick, Kimberly A.; Thelander, Claes; Nielsch, Kornelius; Linke, Heiner

doi:10.1021/nl401501j.s001

nl401501j_si_001.pdf (869.24 kB)

Large Thermoelectric Power Factor Enhancement Observed in InAs Nanowires

journal contribution

posted on 2016-02-18, 22:18 authored by Phillip M. Wu, Johannes Gooth, Xanthippi Zianni, Sofia Fahlvik Svensson, Jan Göran Gluschke, Kimberly A. Dick, Claes Thelander, Kornelius Nielsch, Heiner Linke

We report the observation of a thermoelectric power factor in InAs nanowires that exceeds that predicted by a single-band bulk model by up to an order of magnitude at temperatures below about 20 K. We attribute this enhancement effect not to the long-predicted 1D subband effects but to quantum-dot-like states that form in electrostatically nonuniform nanowires as a result of interference between propagating states and 0D resonances.