First-Principles Correlated Approach to the Normal State of Strontium Ruthenate.

摘要: The interplay between multiple bands, sizable multi-band electronic correlations and strong spin-orbit coupling may conspire in selecting a rather unusual unconventional pairing symmetry layered Sr2RuO4. This mandates detailed revisit of the normal state and, particular, T-dependent incoherence-coherence crossover. Using modern first-principles correlated view, we study this issue actual structure Sr2RuO4 present unified quantitative description range physical responses state. Armed with these, propose that new important element, dominant multi-orbital charge fluctuations Hund’s metal, be primary pair glue for superconductivity. Thereby establish connection superconductivity system.