Anomalous temperature dependent transport through single colloidal nanorods strongly coupled to metallic leads

Hadar Steinberg, Yigal Lilach, Asaf Salant, Omri Wolf, Adam Faust, Oded Millo, Uri Banin*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

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 I ∼ exp(T/T0)- 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.

Original languageEnglish
Pages (from-to)3671-3675
Number of pages5
JournalNano Letters
Volume9
Issue number11
DOIs
StatePublished - 11 Dec 2009

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