3D Hopping Conduction in SnO2 nanobelts

Details 3D Hopping Conduction in SnO2 nanobelts 3D Hopping Conduction in SnO2 nanobelts

2012-04-11

arxiv.org/abs/1204.2522v5

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

3 pages, 4 figures, Accepted for publication in "physica status solidi (RRL) - Rapid Research Letters"

Scientific paper

The temperature dependence of the electrical transport of a individual tin oxide nanobelt was measured, in darkness, from 400 to 5K. We found four intrinsic electrical transport mechanisms through the nanobelt. It starts with Thermal-Activation Conduction between 400 and 314K, Nearest-Neighbor Hopping conduction between 268 and 115K, and Variable Range Hopping conduction below 58K, with a crossover from the 3D-Mott to the 3D-Efros-Shklovskii regime at 16K. We claim that this sequence reveal the three-dimensional nature of the electrical transport in the SnO2 nanobelts, even they are expected to behave as one-dimensional systems.

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