Photoinduced ferromagnetic and superconducting orders in multiorbital Hubbard models

Abstract- The search for hidden orders in photoexcited lattice systems is an active research field driven by experimental reports of light-induced or light-stabilized phases. In this study, we investigate hidden electronic orders in strongly correlated two-orbital Hubbard models with orbital-dependent bandwidths. In equilibrium, the half-filled systems are antiferromagnetically ordered. Using non-equilibrium dynamical mean field theory we demonstrate the appearance of nonthermal ferromagnetic order in the photo-doped state, if the two bandwidths are sufficiently different, and its coexistence with spin-singlet $\eta$-superconductivity in the high photo-doping region. Spin-triplet $\eta$-superconducting order appears instead if the two bandwidths are comparable. The rich nonequilibrium phasediagram uncovered in this work shows that Mott insulating multi-orbital systems provide an interesting platform for the realization of nonthermal electronic orders. 

This data base provides plotting script, data and/or data for

all the figures of the above publication (DOI: 10.1103/PhysRevB.110.L041109)

The plotting script is written in MATLAB

Acknowledgements - We thank Y. Murakami for helpful comments on the manuscript and the Swiss National Science Foundation for the funding (Grant No. 200021-196966). The nonequilibrium DMFT calculations are based on the NESSi library. and the NESS simulations on a code originally developed by J. Li and M. Eckstein. The calculations were run on the beo06 cluster at the University of Fribourg.