'Cooper pairs' can be found in insulators as well superconductors

Nearly a century ago, Dutch physicist Kamerlingh Onnes discovered that some metals transform into perfect electrical conductors when cooled to temperatures near absolute zero. Once started, their currents of electrons can flow perpetually.

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<p><a href="http://www.physorg.com/news114963524.html">'Cooper pairs' can be found in insulators as well superconductors</a></p> <p>Nearly a century ago, Dutch physicist Kamerlingh Onnes discovered that some metals transform into perfect electrical conductors when cooled to temperatures near absolute zero. Once started, their currents of electrons can flow perpetually.</p>