Superconductivity in Bundles of Double-Wall Carbon Nanotubes
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Shi-2012-Superconductivity in bundles.pdf
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Author(s)
Shi, Wu
Wang, Zhe
Zhang, Qiucen
Zheng, Yuan
Ieong, Chao
He, Mingquan
Lortz, Rolf
Cai, Yuan
Wang, Ning
Zhang, Ting
Date Issued
September 2012
Journal
Scientific Reports
Publisher
Nature Publishing Group
Citation
Shi, Wu, Zhe Wang, Qiucen Zhang, Yuan Zheng, Chao Ieong, Mingquan He, Rolf Lortz, et al. “Superconductivity in Bundles of Double-Wall Carbon Nanotubes.” Sci. Rep. 2 (September 3, 2012).
Version
Final published version
Abstract
We present electrical and thermal specific heat measurements that show superconductivity in double-wall carbon nanotube (DWCNT) bundles. Clear evidence, comprising a resistance drop as a function of temperature, magnetoresistance and differential resistance signature of the supercurrent, suggest an intrinsic superconducting transition below 6.8 K for one particular sample. Additional electrical data not only confirm the existence of superconductivity, but also indicate the Tc distribution that can arise from the diversity in the diameter and chirality of the DWCNTs. A broad superconducting anomaly is observed in the specific heat of a bulk DWCNT sample, which yields a Tc distribution that correlates well with the range of the distribution obtained from the electrical data. As quasi one dimensionality of the DWCNTs dictates the existence of electronic density of state peaks, confirmation of superconductivity in this material system opens the exciting possibility of tuning the Tc through the application of a gate voltage.
MIT Department
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Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Massachusetts Institute of Technology. Department of Physics
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Creative Commons Attribution 3.0
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DOI of Published Version
https://doi.org/10.1038/srep00625
