Neutron scattering measurements on YBa{sub 2}Cu{sub 3}O{sub 7-{delta}}

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Polarized and unpolarized neutrons were used to study excitations in YBa{sub 2}Cu{sub 3}O{sub 7-d}. The magnetic excitations are found to be centered at ({pi},{pi}) in the reciprocal lattice and are sharply peaked in energy at 41 MeV in the superconducting state and broad in energy in the normal state. The intensity is found to result from coupled bilayers in both the normal and superconducting state. A new set of incommensurate one-dimensional phonon excitations was discovered in scans that integrate over energy along planes in reciprocal space. These are found to be very sharply defined in momentum space and are thought ... continued below

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4 p.

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Mook, H. A.; Dai, P.; Mostoller, M. E.; Dogan, F.; Salama, K. & Aeppli, G. May 1996.

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Description

Polarized and unpolarized neutrons were used to study excitations in YBa{sub 2}Cu{sub 3}O{sub 7-d}. The magnetic excitations are found to be centered at ({pi},{pi}) in the reciprocal lattice and are sharply peaked in energy at 41 MeV in the superconducting state and broad in energy in the normal state. The intensity is found to result from coupled bilayers in both the normal and superconducting state. A new set of incommensurate one-dimensional phonon excitations was discovered in scans that integrate over energy along planes in reciprocal space. These are found to be very sharply defined in momentum space and are thought to stem from 2k{sub F} effects for the Cu-O chains.

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4 p.

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OSTI as TI96009637

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  • 10. anniversary high temperature superconductivity workshop on physics, materials and applications, Houston, TX (United States), 12-16 Mar 1996

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  • Other: TI96009637
  • Report No.: CONF-960366--6
  • Grant Number: AC05-96OR22464
  • DOI: 10.2172/224866 | External Link
  • Office of Scientific & Technical Information Report Number: 224866
  • Archival Resource Key: ark:/67531/metadc672344

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  • May 1996

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  • June 29, 2015, 9:42 p.m.

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  • Jan. 19, 2016, 8:27 p.m.

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Mook, H. A.; Dai, P.; Mostoller, M. E.; Dogan, F.; Salama, K. & Aeppli, G. Neutron scattering measurements on YBa{sub 2}Cu{sub 3}O{sub 7-{delta}}, report, May 1996; Tennessee. (digital.library.unt.edu/ark:/67531/metadc672344/: accessed October 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.