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Superconductivity (zero resistance thanks to quantum behavior) is normally limited to exotic materials at temperatures near absolute zero. Looking for materials which exhibit this effect at higher temperatures has been a holy grail search, still barely getting beyond a few tens of degrees above absolute zero. But recently physicists at the Max Planck Institute demonstrated superconductivity at ~200K, around the temperature of liquid nitrogen. Don't start yet though on your superconducting circuit plans. The material used is a variant on hydrogen sulphide, in this case H[SUB]3[/SUB]S. And it only works at a pressure of 200GPa, around 1.6 million times atmospheric pressure. In general, researchers believe hydrogen-rich compounds, with lots of relatively loose electrons to form the required Cooper pairs, are most likely to exhibit effects like this. Maybe H[SUB]3[/SUB]Si or H[SUB]3[/SUB]Ge will follow?
Nice find! I realized I made a stupid mistake. Liquid nitrogen boils at 77K, whereas I was think for some odd reason -77C. I guess I get an F on that, but still 200K for this latest superconductor is impressive
