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(a) Typical layout for the NWs with their contacts. (b) three-dimensional tapping-mode AFM image of a NW with a length of and a width of . scale ranges from .
Variation of the resistance of NWs vs the temperature: (a) typical variation for a width, -type NW, from , (b) -type NWs with widths ranging from , and (c) -type NWs with widths ranging from .
Variation of the coefficient vs for - and -type NWs.
Variation of the NW resistances vs the inverse of the width for (a) -type and (b) -type NWs. For the correction, we take into account the depletion width to get the effective width .
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