Temperature scaling of the integrated dynamical susceptibility in YBa2Cu3O6.5(Tc=50 K)

R. J. Birgeneau, R. W. Erwin, P. M. Gehring, M. A. Kastner, B. Keimer, M. Sato, S. Shamoto, G. Shirane, J. Tranquada

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Abstract

The magnetic neutron scattering cross section in a crystal YBa2Cu3O6.5(Tc=50 K) has been measured for energies between 4.5 meV and 15 meV and temperatures between 10 K and 275 K. From these data we extract the generalized susceptibility integrated around the (π, π) position {Mathematical expression} These data are combined with those at 8.3 and 33.1 meV from a previous study. It is found that I(ω, T) exhibits the simple temperature scaling form found previously in La2-xSrxCuO4. Specifically, in YBa2Cu3O6.5, I(ω, T)=I(ω, 0)2/πtan-1 (ω/0.9T). Implications of this behavior for the d.c. and infrared conductivity are discussed.

Original languageEnglish
Pages (from-to)15-19
Number of pages5
JournalZeitschrift für Physik B Condensed Matter
Volume87
Issue number1
DOIs
Publication statusPublished - 1992 Feb

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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