Lattice dynamics and electron-phonon coupling in Sr2 Ru O4: Inelastic neutron scattering and shell-model calculations

M. Braden, W. Reichardt, Y. Sidis, Zhiqiang Mao, Y. Maeno

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Abstract

The lattice dynamics in Sr2 Ru O4 has been studied by inelastic neutron scattering combined with shell-model calculations. The in-plane bond-stretching modes in Sr2 Ru O4 exhibit a normal dispersion in contrast to all electronically doped perovskites studied so far. Evidence for strong electron phonon coupling is found for c -polarized phonons suggesting a close connection with the anomalous c -axis charge transport in Sr2 Ru O4. The role of this electron-phonon coupling in the superconducting pairing remains, however, a challenging open issue.

Original languageEnglish (US)
Article number014505
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume76
Issue number1
DOIs
StatePublished - Jul 11 2007

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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