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Phys. Rev. B 76, 073404 (2007) [4 pages]

Transport properties of carbon nanotube C60 peapods

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C. H. L. Quay1, John Cumings1,*, S. J. Gamble2, A. Yazdani3, H. Kataura4, and D. Goldhaber-Gordon1,†
1Physics Department, Stanford University, Stanford, California 94305-4060, USA
2Applied Physics Department, Stanford University, Stanford, California 94305-4090, USA
3Department of Physics, Princeton University, Princeton, New Jersey 08544, USA
4Nanotechnology Research Institute, National Institute of Advanced Industrial Science and Technology, Central 4, Higashi 1-1-1, Tsukuba, Ibaraki 305-8562, Japan

Received 27 March 2007; published 3 August 2007

We measure the conductance of carbon nanotube peapods from room temperature down to 250 mK. Our devices show both metallic and semiconducting behavior at room temperature. At the lowest temperatures, we observe single electron effects. Our results suggest that the encapsulated C60 molecules do not introduce substantial backscattering for electrons near the Fermi level. This is remarkable, given that previous tunneling spectroscopy measurements show that encapsulated C60 strongly modifies the electronic structure of a nanotube away from the Fermi level.

© 2007 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.76.073404
DOI:
10.1103/PhysRevB.76.073404
PACS:
73.22.−f, 73.63.Fg, 71.10.Pm

*Present address: Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742-2115.

†goldhaber-gordon@stanford.edu

 
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