Cantone, A. L. and Buitelaar, M. R. and Smith , C. G. and Anderson, D and Jones, G. A. C. and Chorley, S. J. and Casiraghi, C and Lombardo, A and Ferrari, A. C. and Shinohara, H and Ardavan, Arzhang and Warner, Jamie H. and Watt, A. A. R. and Porfyrakis, Kyriakos and Briggs, G. Andrew D. (2008) Electronic transport characterization of Sc@C82 single-wall carbon nanotube peapods. Journal of Applied Physics, 104 (8). 083717. ISSN 0021-8979
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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.
|Additional Information:||Article 7 pages long.|
|Uncontrolled Keywords:||carbon nanotubes, Kondo effect, paramagnetic materials, Raman spectra, scandium|
|Subjects:||Physical Science > Nanoelectronics|
Analytical Science > Metrology and standards in nanotechnology
Material Science > Nanostructured materials
|Deposited By:||Lesley Tobin|
|Deposited On:||02 Dec 2008 14:04|
|Last Modified:||12 Feb 2009 12:47|
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