Opening the gap

Piers Coleman ()
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Piers Coleman: Rutgers University

Nature, 1998, vol. 392, issue 6672, 134-135

Abstract: The ceramic high-temperature superconductors, discovered 11 years ago, behave like two-dimensional metals when they are above their superconducting transition temperature. The electrons are confined to move in parallel planes, which restricts their momentum distribution to a two-dimensional zone in momentum space. Angle-resolved photoemission has been used to show that this distribution is gradually eaten away as the temperature is lowered, showing that some sort of electron correlations begin before superconductivity sets in.

Date: 1998
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DOI: 10.1038/32306

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