Journal
JOURNAL OF APPLIED PHYSICS
Volume 113, Issue 18, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4804324
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Funding
- National Science Foundation through EPSCoR [EPS1003970]
- FAPESP
- CAPES
- CNPq
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Detailed experimental and theoretical studies of lateral electron transport in a system of quantum dot chains demonstrate the complicated character of the conductance within the chain structure due to the interaction of conduction channels with different dimensionalities. The one-dimensional character of states in the wetting layer results in an anisotropic mobility, while the presence of the zero-dimensional states of the quantum dots leads to enhanced hopping conductance, which affects the low-temperature mobility and demonstrates an anisotropy in the conductance. These phenomena were probed by considering a one-dimensional model of hopping along with band filling effects. Differences between the model and the experimental results indicate that this system does not obey the simple one-dimensional Mott's law of hopping and deserves further experimental and theoretical considerations. (C) 2013 AIP Publishing LLC.
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