English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We study the symmetry-broken phases in two- and three-orbital Hubbard modelswith lifted orbital degeneracy using dynamical mean field theory. On thetechnical level, we explain how symmetry relations can be exploited to measurethe four-point correlation functions needed for the calculation of the latticesusceptibilities. In the half-filled two-orbital model with crystal fieldsplitting, we find an instability of the metallic phase to spin-orbital orderwith neither spin nor orbital moment. This ordered phase is shown to be relatedto the recently discovered fluctuating-moment induced spin-tripletsuperconducting state in the orbitally degenerate model with shifted chemicalpotential. In the three-orbital case, we consider the effect of a crystal fieldsplitting on the spin-triplet superconducting state in the model with positiveHund coupling, and the spin-singlet superconducting state in the case ofnegative Hund coupling. It is demonstrated that for certain crystal fieldsplittings the higher energy orbitals instead of the lower ones are relevantfor superconductivity, and that $T_c$ can be enhanced by the crystal fieldeffect. We comment on the implications of our results for the superconductivityin strontium ruthenates, and for the recently reported light-enhancedsuperconducting state in alkali-doped fullerides.

Electronic orders in multi-orbital Hubbard models with lifted orbital degeneracy