Optical properties of La1.85Sr0.15CuO4: Evidence for strong electron-phonon and electron-electron interactions

S. L. Herr, K. Kamars, C. D. Porter, M. G. Doss, D. B. Tanner, D. A. Bonn, J. E. Greedan, C. V. Stager, T. Timusk

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Abstract

The optical properties of the high-Tc superconductor La1.85Sr0.15CuO4 have been measured over the far-infrared through ultraviolet frequency range at temperatures between 4 and 300 K. The frequency-dependent conductivity shows strong vibrational features in the far infrared (240, 355, and 495 cm-1) and two electronic transitions in the infrared (3500 cm-1/0.44 eV and 10 500 cm-1/1.3 eV). The measurements are interpreted within a model of strongly correlated electrons interacting strongly with vibrational modes.

Original languageEnglish
Pages (from-to)733-735
Number of pages3
JournalPhysical Review B
Volume36
Issue number1
DOIs
Publication statusPublished - Jan 1 1987

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ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Herr, S. L., Kamars, K., Porter, C. D., Doss, M. G., Tanner, D. B., Bonn, D. A., Greedan, J. E., Stager, C. V., & Timusk, T. (1987). Optical properties of La1.85Sr0.15CuO4: Evidence for strong electron-phonon and electron-electron interactions. Physical Review B, 36(1), 733-735. https://doi.org/10.1103/PhysRevB.36.733