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Mixed lattice and electronic states in high-temperature superconductors

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.

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R. J. McQueeney, J. L. Sarrao, P. G. Pagliuso, P. W. Stephens, R. Osborn. 2001-04-06. Mixed lattice and electronic states in high-temperature superconductors. https://doi.org/10.1103/physrevlett.87.077001

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