In 2008, this phenomenon was found in iron-based arsenic oxide by Hosono et al.
In 2008, this phenomenon was found in iron-based arsenic oxide by Hosono et al. It was the subject of a 1986 publication by Bednorz and Müller, who reported evidence for it in an oxide of barium, lanthanum, and copper. Replacing lanthanum with yttrium in that compound yields (*) YBCO, which demonstrates the high temperature variety of this phenomenon, which is described by Ginzburg-Landau theory. Materials that exhibit this phenomenon characteristically expel their magnetic fields in the Meissner effect. Governed by BCS theory, for 10 points, identify this phenomenon in which a material exhibits zero electrical resistance.
In 2008, this phenomenon was found in iron-based arsenic oxide by Hosono et al.
{superconductivity} [or just {superconductors}]