Journal
APPLIED PHYSICS LETTERS
Volume 90, Issue 7, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2476343
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The authors investigate the subthreshold behavior of triple-gate silicon field-effect transistors by low-temperature transport experiments. These three-dimensional nanoscale devices consist of a lithographically defined silicon nanowire surrounded by a gate with an active region as small as a few tens of nanometers down to 50x60x35 nm(3). Conductance versus gate voltage shows Coulomb blockade oscillations with a large charging energy due to the formation of a small potential well below the gate. According to dependencies on device geometry and thermionic current analyses, the authors conclude that subthreshold channels, a few nanometers wide, appear at the nanowire edges, hence providing an experimental evidence for the corner effect. (c) 2007 American Institute of Physics.
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