Mixed lattice and electronic states in high-temperature superconductors

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

doi:10.1103/PhysRevLett.87.077001

Mixed lattice and electronic states in high-temperature superconductors

Superconductivity 2009-11-07 v1 Strongly Correlated Electrons

Authors: R. J. McQueeney , J. L. Sarrao , P. G. Pagliuso , P. W. Stephens , R. Osborn

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Abstract

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.

Keywords

high-temperature superconductor inelastic neutron scattering lattice vibration metal-insulator transition electron-lattice coupling charge fluctuation

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@article{arxiv.cond-mat/0104118,
  title  = {Mixed lattice and electronic states in high-temperature superconductors},
  author = {R. J. McQueeney and J. L. Sarrao and P. G. Pagliuso and P. W. Stephens and R. Osborn},
  journal= {arXiv preprint arXiv:cond-mat/0104118},
  year   = {2009}
}

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4 pages, 3 postscript figures, RevTeX

Mixed lattice and electronic states in high-temperature superconductors

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