Superconductivity in thin films of boron-doped carbon nanotubes

Superconductivity in carbon nanotubes (CNTs) is attracting considerable attention. However, its correlation with carrier doping has not been reported. We report on the Meissner effect found in thin films consisting of assembled boron (B)-doped single-walled CNTs (B-SWNTs). We find that only B-SWNT f...

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Bibliographic Details
Published in:Physical review letters 2008-07, Vol.101 (2), p.027002-027002, Article 027002
Main Authors: Murata, N, Haruyama, J, Reppert, J, Rao, A M, Koretsune, T, Saito, S, Matsudaira, M, Yagi, Y
Format: Article
Language:English
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Summary:Superconductivity in carbon nanotubes (CNTs) is attracting considerable attention. However, its correlation with carrier doping has not been reported. We report on the Meissner effect found in thin films consisting of assembled boron (B)-doped single-walled CNTs (B-SWNTs). We find that only B-SWNT films consisting of low boron concentration leads to evident Meissner effect with Tc=12 K and also that a highly homogeneous ensemble of the B-SWNTs is crucial. The first-principles electronic-structure study of the B-SWNTs strongly supports these results.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.101.027002