The most recent Proceedings of the National Academy of Science has an interesting paper.
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I've got a backdoor copy of the full text.
The voltage applied get super-conductivity at around 3K (liquid helium) was between 1kV and 1.4kV, so it's long way from a commercial product.
A couple of the authors are from the Radboud University in Nijmegen (where I worked from 1993 to 1996 in the science faculty electronics workshop) but I don't recognise any of the names.