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- W2131463864 abstract "We report the current-voltage (I{V ) characteristics of individual polypyrrole nanotubes and poly(3,4ethylenedioxythiophene) (PEDOT) nanowires in a temperature range from 300 K to 2 K. Considering the complex structures of such quasi-one-dimensional systems with an array of ordered conductive regions separated by disordered barriers, we use the extended ∞uctuation-induced tunneling (FIT) and thermal excitation model (Kaiser expression) to flt the temperature and electric-fleld dependent I{V curves. It is found that the I{V data measured at higher temperatures or higher voltages can be well fltted by the Kaiser expression. However, the low-temperature data around the zero bias clearly deviate from those obtained from this model. The deviation (or zero-bias conductance suppression) could be possibly ascribed to the occurrence of the Coulomb-gap in the density of states near the Femi level and/or the enhancement of electron-electron interaction resulting from nanosize efiects, which have been revealed in the previous studies on low-temperature electronic transport in conducting polymer fllms, pellets and nanostructures. In addition, similar I{V characteristics and deviation are also observed in an isolated K0:27MnO2 nanowire." @default.
- W2131463864 created "2016-06-24" @default.
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- W2131463864 date "2009-06-01" @default.
- W2131463864 modified "2023-09-30" @default.
- W2131463864 title "Current-voltage characteristics of individual conducting polymer nanotubes and nanowires" @default.
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- W2131463864 doi "https://doi.org/10.1088/1674-1056/18/6/066" @default.
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