Electronic transport characterization of Sc @ C(82) single-wall carbon nanotube peapods

Electronic transport characterization of Sc @ C(82) single-wall carbon nanotube peapods

We present electrical transport and Raman measurements on individual single-wall carbon nanotubes filled with the paramagnetic metallofullerene Sc@ C82. We find nearly all devices to be metallic p -type conductors, which we tentatively attribute to bandstructure modification of the nanotubes by the...

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Hlavní autoři: Cantone, A, Buitelaar, MR, Smith, C, Anderson, D, Jones, G, Chorley, S, Casiraghi, C, Lombardo, A, Ferrari, A, Shinohara, H, Ardavan, A, Warner, J, Watt, A, Porfyrakis, K, Briggs, G
Médium: Journal article
Jazyk:English
Vydáno: 2008
Popis
Shrnutí:We present electrical transport and Raman measurements on individual single-wall carbon nanotubes filled with the paramagnetic metallofullerene Sc@ C82. We find nearly all devices to be metallic p -type conductors, which we tentatively attribute to bandstructure modification of the nanotubes by the encapsulated Sc@ C82 molecules. At low temperatures the peapod devices behave as quantum dots and transport is shown to be quantum coherent over distances of at least ∼100 nm. Kondo features are observed at the lowest measurement temperatures of 50 mK. Our results are of fundamental interest because of the long spin coherence times of the unpaired electrons on the Sc@ C82 molecules and the possibility this offers for studying one-dimensional spin chains in carbon nanotubes. © 2008 American Institute of Physics.

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