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

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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

DOI 10.1103/PhysRevLett.87.077001 · Physical Review Letters

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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 La2−xSrxCuO4. 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.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
La2-xSrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
La1.85Sr0.15CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Bi2Sr2CaCu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown