Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.

Science 19 June 1992:
Vol. 256. no. 5064, pp. 1664 - 1667
DOI: 10.1126/science.256.5064.1664
Prev | Table of Contents | Next

Articles

Spin Susceptibility Scaling in High-Temperature Superconductors

J. Ruvalds , C. T. Rieck , J. Zhang , and A. Virosztek

The spin response of a nested Fermi surface represented by a tight binding energy band is found to exhibit scaling in frequency divided by temperature within a restricted regime close to half-filling of the band. Computations of the spin susceptibility reveal a surprising momentum variation at various temperatures and frequencies. Neutron scattering data on the high-temperature superconductor YBa2Cu3O6+x are analyzed for scaling near a momentum vector that spans nested regions of the orbit. Changes in the Fermi energy remove the scaling properties and reduce the susceptibility to the conventional Fermi liquid behavior of ordinary metals. These results imply that pairing mechanisms of superconductivity need to cope with competing spin density wave and charge density wave instabilities.


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 »


To Advertise     Find Products

Science. ISSN 0036-8075 (print), 1095-9203 (online)