high temperature superconductors

Superconductivity getting closer to room temperatures
A bulk superconductor levitated by a permanent magnet Credit: University of Cambridge - See more at: http://www.cam.ac.uk/research/news/cambridge-team-breaks-superconductor-world-record#sthash.karHK4DU.dpuf
Cambridge team breaks superconductor world record
New superconductor theory may revolutionize electrical engineering
Controlling Superconductors with Light