Secrets Behind High Temperature Superconductors Revealed
In a physics lab, a fun experiment uses a liquid nitrogen cooled ceramic superconductor to levitate a small magnet. (Ttfnrob. CC AN2.0 Generic)
Scientists from Queen Mary, University of London and the University of Fribourg (Switzerland) have found evidence that magnetism is involved in the mechanism behind high temperature superconductivity.
Writing in the journal Nature Materials, Dr Alan Drew from Queen Mary’s Department of Physics and his colleagues at the University of Fribourg report on the investigation of a new high temperature superconductor, the so-called oxypnictides. They found that these exhibit some striking similarities with the previously known copper-oxide high temperature superconductors - in both cases superconductivity emerges from a magnetic state. Their results go some way to explaining the mechanisms behind high temperature superconductors. (more…)
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