Inelastic x-ray scattering as a probe of electronic excitations. Solid and liquid metals

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Use of inelastic x-ray scattering to study excitations in condensed matter systems is discussed with emphasis on complementarity with inelastic neutron scattering. In particular, studies of electronic excitations in simple metals are detailed. A long standing controversy on the role of crystalline long range order on electron dynamics at intermediate momentum transfers is resolved by comparison of response functions obtained in liquid an solid phase of Li, Na, and Al. They show that the overall shape of the response function is unchanged on melting, implying that it is not determined by the long range order of the ion cores. Conversely, ... continued below

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19 p.

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Hill, J.P. December 31, 1996.

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Use of inelastic x-ray scattering to study excitations in condensed matter systems is discussed with emphasis on complementarity with inelastic neutron scattering. In particular, studies of electronic excitations in simple metals are detailed. A long standing controversy on the role of crystalline long range order on electron dynamics at intermediate momentum transfers is resolved by comparison of response functions obtained in liquid an solid phase of Li, Na, and Al. They show that the overall shape of the response function is unchanged on melting, implying that it is not determined by the long range order of the ion cores. Conversely, orientationally independent fine structure disappears on melting and therefore must be attributed to band structure-induced transitions, not many-body effects as had previously been argued. At small q, the plasmon lifetime and dispersion remain unchanged on melting. Other experiments are also briefly reviewed.

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19 p.

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OSTI as DE97001762

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  • Symposium on complimentary use of neutron and X-ray scattering for condensed matter research, Wako (Japan), 25 Oct 1996

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  • Other: DE97001762
  • Report No.: BNL--63696
  • Report No.: CONF-9610227--1
  • Grant Number: AC02-76CH00016
  • Office of Scientific & Technical Information Report Number: 434416
  • Archival Resource Key: ark:/67531/metadc680992

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • December 31, 1996

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  • July 25, 2015, 2:20 a.m.

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  • Nov. 9, 2015, 12:38 p.m.

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Hill, J.P. Inelastic x-ray scattering as a probe of electronic excitations. Solid and liquid metals, article, December 31, 1996; Upton, New York. (digital.library.unt.edu/ark:/67531/metadc680992/: accessed November 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.