Combining electron-phonon and dynamical mean-field theory calculations of correlated materials: Transport in the correlated metal <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Sr</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>RuO</mml:mi><mml:mn>4</mml:mn></mml:msub></mml:mrow></mml:math>
David Abramovitch, Jin-Jian Zhou, Jernej Mravlje, Antoine Georges, Marco Bernardi
Abstract
In correlated quantum materials, strong electronic interactions lead to unconventional transport and exotic phases. Dynamical mean field theory (DMFT) calculations can describe the purely electronic dynamics in these materials. Here, the authors integrate into this framework the interactions between electrons and lattice vibrations (phonons). They apply this method to the correlated metal Sr${}_{2}$RuO${}_{4}$, elucidating the respective contributions of electron-electron and electron-phonon scattering to the resistivity and spectral functions. The method presented in this work enables future studies of electron-phonon physics in various classes of correlated materials, including Mott insulators, high-Tc superconductors and strange metals.