March 24, 2011 - High-temperature Superconductor Spills Secret: A New Phase of Matter: The electrons in the pseudogap state aren’t superconducting—so what are they doing? That’s the puzzle that's had condensed matter physicists scratching their heads for two decades.
"A clear answer as to whether such a gap is just an extension of superconductivity or a harbinger of another phase is a critical step in developing better superconductors," Shen said...
The team's findings: electrons in the pseudogap phase are not pairing up. They reorganize into a distinct yet elusive order of their own. In fact, the new order is also present when the material is superconducting; it had been overlooked before, masked by the behavior of superconducting electron pairs.
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