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Science 3 January 1992:
Vol. 255. no. 5040, pp. 46 - 54
DOI: 10.1126/science.255.5040.46
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Articles

Fermi Surfaces, Fermi Liquids, and High-Temperature Superconductors

W. E. PICKETT 1, D. J. SINGH 1, H. KRAKAUER 2, and R. E. COHEN 3

1 Complex Systems Theory Branch, Naval Research Laboratory, Washington, DC 20375-5000
2 Department of Physics, College of William and Mary, Williamsburg, VA 23187-8795
3 Geophysical Laboratory, Carnegie Institution of Washington, 5251 Broad Branch Road, NW, Washington, DC 20015-1305

Recent experimental results are beginning to limit seriously the theories that can be considered to explain high-temperature superconductivity. The unmistakable observations of a Fermi surface, by several groups and methods, make it the focus of realistic theories of the metallic phases. Data from angle-resolved photoemission, positron annihilaton, and de Haas-van Alphen experiments are in agreement with band theory predictions, implying that the metallic phases cannot be pictured as doped insulators. The character of the low energy excitations ("quasiparticles"), which interact strongly with atomic motions, with magnetic fluctuations, and possibly with charge fluctuations, must be sorted out before the superconducting pairing mechanism can be given a microscopic basis.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Photoemission Studies of High-Tc Superconductors: The Superconducting Gap.
Z. -X. Shen, W. E. Spicer, D. M. King, D. S. Dessau, and B. O. Wells (1995)
Science 267, 343-350
   Abstract »    PDF »
Spin Susceptibility Scaling in High-Temperature Superconductors.
J. Ruvalds, C. T. Rieck, J. Zhang, and A. Virosztek (1992)
Science 256, 1664-1667
   Abstract »    PDF »
Experimental Constraints on the Theory of High-Tc Superconductivity.
P. W. Anderson (1992)
Science 256, 1526-1531
   Abstract »    PDF »


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