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Opening the gap

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  • Piers Coleman

    (Rutgers University)

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.

Suggested Citation

  • Piers Coleman, 1998. "Opening the gap," Nature, Nature, vol. 392(6672), pages 134-135, March.
    • Handle: RePEc:nat:nature:v:392:y:1998:i:6672:d:10.1038_32306
    DOI: 10.1038/32306
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