Lattice dynamics and electron-phonon coupling in Sr2RuO4
Abstract
The lattice dynamics in Sr2RuO4 has been studied by inelastic neutron scattering combined with shell-model calculations. The in-plane bond-stretching modes in Sr2RuO4 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 Sr2RuO4.
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