Service interruption on Monday 11 July from 12:30 to 13:00: all the sites of the CCSD (HAL, Epiciences, SciencesConf, AureHAL) will be inaccessible (network hardware connection).
Skip to Main content Skip to Navigation
Journal articles

Gate-modulated thermopower of disordered nanowires: II. Variable-range hopping regime

Abstract : We study the thermopower of a disordered nanowire in the field effect transistor configuration. After a first paper devoted to the elastic coherent regime (Bosisio R., Fleury G. and Pichard J.-L. 2014 New J. Phys. 16 035004), we consider here the inelastic activated regime taking place at higher temperatures. In the case where charge transport is thermally assisted by phonons (Mott Variable Range Hopping regime), we use the Miller-Abrahams random resistor network model as recently adapted by Jiang et al. for thermoelectric transport. This approach previously used to study the bulk of the nanowire impurity band is extended for studying its edges. In this limit, we show that the typical thermopower is largely enhanced, attaining values larger that 10 kB/e ∼ 1 mV K−1 and exhibiting a non-trivial behaviour as a function of the temperature. A percolation theory by Zvyagin extended to disordered nanowires allows us to account for the main observed edge behaviours of the thermopower.
Document type :
Journal articles
Complete list of metadata

Cited literature [42 references]  Display  Hide  Download
Contributor : Bruno Savelli Connect in order to contact the contributor
Submitted on : Wednesday, April 1, 2015 - 4:25:03 PM
Last modification on : Tuesday, December 14, 2021 - 3:18:53 AM
Long-term archiving on: : Thursday, July 2, 2015 - 3:26:20 PM


Files produced by the author(s)




Riccardo Bosisio Bosisio, Cosimo Gorini, Geneviève Fleury, Jean-Louis Pichard. Gate-modulated thermopower of disordered nanowires: II. Variable-range hopping regime . New Journal of Physics, Institute of Physics: Open Access Journals, 2014, 16, pp.095005. ⟨10.1088/1367-2630/16/9/095005⟩. ⟨cea-01138312⟩



Record views


Files downloads