Spin dynamics and implications for superconductivity: some problems with thed-wave scenario |
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| Authors: | K. Levin Y. Zha R. J. Radtke Q. Si M. R. Norman H. -B. Schüttler |
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| Affiliation: | (1) Department of Physics and the James Franck Institute, The University of Chicago, 60637 Chicago, Illinois;(2) Serin Physics Laboratory, Rutgers University, 08855 Piscataway, New Jersey;(3) Materials Science Division, Argonne National Laboratory, 60439 Argonne, Illinois;(4) Department of Physics and Astronomy, The University of Georgia, 30602 Athens, Georgia |
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| Abstract: | We review the spin dynamics of the normal state of the cuprates with special emphasis on neutron data in both the YBa2Cu3O7– and La2–xSrxCuO4 systems. When realistic models of the Fermi surface shapes are incorporated, along with a moderate degree of spin fluctuations, we find good semiquantitative agreement with experiment for both cuprates. Building on the success of this Fermi-liquid-based scheme, we explore the implications ford-wave pairing from a number of vantage points. We conclude that our present experimental and theoretical understanding is inadequate to confirm or refute thed-wave scenario. |
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| Keywords: | Spin dynamics d-Wave pairing Eliashberg theory high-temperature superconductors impurities |
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