Superconductivity at 39 K in magnesium diboride View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2001-03

AUTHORS

Jun Nagamatsu, Norimasa Nakagawa, Takahiro Muranaka, Yuji Zenitani, Jun Akimitsu

ABSTRACT

In the light of the tremendous progress that has been made in raising the transition temperature of the copper oxide superconductors (for a review, see ref. 1), it is natural to wonder how high the transition temperature, Tc, can be pushed in other classes of materials. At present, the highest reported values of Tc for non-copper-oxide bulk superconductivity are 33 K in electron-doped Cs(x)Rb(y)C60 (ref. 2), and 30 K in Ba(1-x)K(x)BiO3 (ref. 3). (Hole-doped C60 was recently found to be superconducting with a Tc as high as 52 K, although the nature of the experiment meant that the supercurrents were confined to the surface of the C60 crystal, rather than probing the bulk.) Here we report the discovery of bulk superconductivity in magnesium diboride, MgB2. Magnetization and resistivity measurements establish a transition temperature of 39 K, which we believe to be the highest yet determined for a non-copper-oxide bulk superconductor. More... »

PAGES

63

Identifiers

URI

http://scigraph.springernature.com/pub.10.1038/35065039

DOI

http://dx.doi.org/10.1038/35065039

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1052666736

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/11242039


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