Can Doping Graphite Trigger Room Temperature Superconductivity? Evidence for Granular High-Temperature Superconductivity in Water-Treated Graphite Powder

Granular superconductivity in powders of small graphite grains (several tens of micrometers) is demonstrated after treatment with pure water. The temperature, magnetic field and time dependence of the magnetic moment of the treated graphite powder provides evidence for the existence of superconducti...

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Bibliographic Details
Published in:Advanced materials (Weinheim) 2012-11, Vol.24 (43), p.5826-5831
Main Authors: Scheike, T., Böhlmann, W., Esquinazi, P., Barzola-Quiquia, J., Ballestar, A., Setzer, A.
Format: Article
Language:English
Subjects:
Electric Conductivity
graphite
Graphite - chemistry
Magnetics
Oxides - chemistry
superconductivity
Temperature
Water - chemistry
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Summary:Granular superconductivity in powders of small graphite grains (several tens of micrometers) is demonstrated after treatment with pure water. The temperature, magnetic field and time dependence of the magnetic moment of the treated graphite powder provides evidence for the existence of superconducting vortices with some similarities to high‐temperature granular superconducting oxides but even at temperatures above 300 K. Room temperature superconductivity in doped graphite or at its interfaces appears to be possible.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201202219