Absolute measurements of the high-frequency magnetic dynamics in high-Tc superconductors

S. M. Hayden, G. Aeppli, P. Dai, H. A. Mook, T. G. Perring, Sang-Wook Cheong, Z. Fisk, F. Doǧan, T. E. Mason

Research output: Contribution to journalArticle

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Abstract

We review recent measurements of the high-frequency dynamic magnetic susceptibility in the high-Tc, superconducting systems La2-xSrxCuO4 and YBa2Cu3O6+x. Experiments were performed using the chopper spectrometers HET and MARI at the ISIS spallation source. We have placed our measurements on an absolute intensity scale; this allows systematic trends to be seen and comparisons with theory to be made. We find that the insulating S = 1/2 antiferromagnetic parent compounds show a dramatic renormalization of the spin wave intensity. The effect of doping on the response is to cause broadenings in wave vector and large redistributions of spectral weight in the frequency spectrum.

Original languageEnglish (US)
Pages (from-to)765-772
Number of pages8
JournalPhysica B: Condensed Matter
Volume241-243
DOIs
StatePublished - 1997

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Keywords

  • 2-D antiferromagnets
  • High temperature superconductors
  • Quantum corrections
  • Spin-waves

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    Hayden, S. M., Aeppli, G., Dai, P., Mook, H. A., Perring, T. G., Cheong, S-W., Fisk, Z., Doǧan, F., & Mason, T. E. (1997). Absolute measurements of the high-frequency magnetic dynamics in high-Tc superconductors. Physica B: Condensed Matter, 241-243, 765-772. https://doi.org/10.1016/S0921-4526(97)00714-X