Mixed lattice and electronic states in high-temperature superconductors

J. L. Sarrao; P. G. Pagliuso; P. W. Stephens; R. J. McQueeney; R. Osborn

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Mixed lattice and electronic states in high-temperature superconductors

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arxiv cond-mat/0104118 v1 pith:FD73YWS4 submitted 2001-04-06 cond-mat.supr-con cond-mat.str-el

R. J. McQueeney , J. L. Sarrao , P. G. Pagliuso , P. W. Stephens , R. Osborn This is my paper

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keywords latticechargeelectronicfluctuationsmodesabruptcharacterizedcorrelation

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Inelastic neutron scattering measurements are presented which show the abrupt development of new oxygen lattice vibrations near the doping-induced metal-insulator transition in La(2-x)Sr(x)CuO(4). A direct correlation is established between these lattice modes and the electronic susceptibility (as measured by photoemission) inferring that such modes mix strongly with charge fluctuations. This electron-lattice coupling can be characterized as a localized one-dimensional response of the lattice to short-ranged metallic charge fluctuations.

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