Why don’t we have room-temperature superconductors

# Why don’t we have room-temperature superconductors? # Why don’t we have room-temperature superconductors * Are they theoretically possible? * Would it require a material with a certain set of properties? * Is anybody working on this?  [Web URL for this note](http://notes.benjaminreinhardt.com/Why+don’t+we+have+room-temperature+superconductors) [Comment on this note](http://via.hypothes.is/http://notes.benjaminreinhardt.com/Why+don’t+we+have+room-temperature+superconductors)