The disappointing story of superconductivity in Strontium Ruthenate
Ross H. McKenzie (noreply@blogger.com)
In 1994 superconductivity was discovered in strontium ruthenate (Sr2RuO4). This attracted considerable interest because it had a perovskite crystal structure , just like the cuprates. Furthermore, it was a stoichiometric compound and so not plagued by impurities like the cuprates. In 1998, things got more interesting when NMR Knight shift measurements were interpreted as evidence for triplet superconductivity. Analogues were made with triplet Cooper pairing in superfluid 3He mediated by ferromag