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arXiv:1209.1938cond-mat.supr-con

Can doping graphite trigger room temperature superconductivity? Evidence for granular high-temperature superconductivity in water-treated graphite powder

T. Scheike, W. Böhlmann, P. Esquinazi, J. Barzola-Quiquia, A. Ballestar, A. Setzer

Abstract

Trying to dope graphite flakes we found that the magnetization of pure, several tens of micrometers grain size graphite powder and after a simple treatment with pure water shows clear and reproducible granular superconducting behavior with a critical temperature above 300K. The observed magnetic characteristics as a function of temperature, magnetic field and time, provide evidence for weakly coupled grains through Josephson interaction, revealing the existence of superconducting vortices.

arXiv comments
19 pages, 5 figures; http://onlinelibrary.wiley.com/doi/10.1002/adma.201202219/abstract (2012)
Journal reference
Advanced Materials 24 (2012) 5826
DOI
Subjects
cond-mat.supr-conSuperconductivity cond-mat.mtrl-sciMaterials Science cond-mat.str-elStrongly Correlated Electrons

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Linked by 3 identifiable commenters in 3 comments across 1 thread, from Sep 2012 to Sep 2012. Found in 1 HN submission from Sep 2012 to Sep 2012. Open submission discussions.

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Discussed in comments1 thread

  1. Room Temperature Superconductivity Found in Graphite Grains 3 comments

    • The first issue you'll run into is that the graphite grains they are using "several tens of micrometers grain size graphite powder" [1]. It might not be straightforward to make that from a pencil, but you could buy the powder online. I've not read the full paper so there might…

      46BitView on HNParent context

    • It was published in Advanced Materials, a peer-reviewed journal. http://onlinelibrary.wiley.com/doi/10.1002/adma.201202219/ab... Here's the pre-print PDF http://arxiv.org/pdf/1209.1938v1

      sp332View on HNParent context

    • Thanks for the article link; but in the future please consider linking to the main arxiv page[1], not a specific PDF. The direct link will become outdated if a new version of the paper is uploaded; also, the main page will contain a lot of useful data about the publication…

      shardlingView on HNParent context

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