Journal
NANO LETTERS
Volume 9, Issue 11, Pages 3671-3675Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl901912e
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Funding
- US-Israel Bi-National Science Foundation (BSF)
- Israel Science Foundation
- Centers of Excellence Program [481/07]
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We report wiring of individual colloidal nanorods (NRs), 30-60 nm long by 3.5-5 nm diameter. Strong electrical coupling is achieved by electron beam induced deposition (EBID) of metallic lines targeting NR tips with nanometric precision. At T = 4 K many devices exhibit smooth I(V) curves with no sharp onset features, which remarkably fit a Fowler-Nordheim tunneling model. All devices exhibit an anomalous exponential temperature dependence of the form 1 similar to exp(T/T-0). This irregular behavior cannot be explained by any hopping or activation model and Is interpreted by accounting for the lowering of the NR conduction band due to lattice dilation and phonon coupling.
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