Pseudogap and Incommensurate Magnetic Fluctuations in YBa{sub 2}Cu{sub 3}O{sub 6.6}

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Unpolarized inelastic neutron scattering is used to study the temperature and wave vector dependence of the dynamical magnetic susceptibility, {xi}`` (q,{omega}), of a well characterized single crystal YBa{sub 2}Cu{sub 3}O{sub 6.6} (T{sub c} = 62.7 K). We find that a pseudogap opens in the spin fluctuation spectrum at temperatures well above T{sub c}. We speculate that the appearance of the low frequency incommensurate fluctuations is associated with the opening of the pseudogap. To within the error of the measurements, a gap in the spin fluctuation spectrum is found in the superconducting state.

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11 p.

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Dai, P., Mook, H.A., July 24, 1997.

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  • Dai, P., Mook, H.A., Washington Univ., Seattle, WA (United States). Dept. of Materials Science and Engineering

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Unpolarized inelastic neutron scattering is used to study the temperature and wave vector dependence of the dynamical magnetic susceptibility, {xi}`` (q,{omega}), of a well characterized single crystal YBa{sub 2}Cu{sub 3}O{sub 6.6} (T{sub c} = 62.7 K). We find that a pseudogap opens in the spin fluctuation spectrum at temperatures well above T{sub c}. We speculate that the appearance of the low frequency incommensurate fluctuations is associated with the opening of the pseudogap. To within the error of the measurements, a gap in the spin fluctuation spectrum is found in the superconducting state.

Physical Description

11 p.

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OSTI as DE97008435

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  • International conference on neutron scattering (ICNS), Toronto (Canada), 17-21 Aug 1997; Other Information: DN: Prepared in cooperation with Washington Univ., Seattle, WA

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  • Other: DE97008435
  • Report No.: CONF-970814--13
  • Grant Number: AC05-96OR22464
  • Office of Scientific & Technical Information Report Number: 621556
  • Archival Resource Key: ark:/67531/metadc691067

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  • July 24, 1997

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

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  • Jan. 25, 2016, 12:41 p.m.

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Dai, P., Mook, H.A.,. Pseudogap and Incommensurate Magnetic Fluctuations in YBa{sub 2}Cu{sub 3}O{sub 6.6}, article, July 24, 1997; Tennessee. (digital.library.unt.edu/ark:/67531/metadc691067/: accessed August 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.