Photoinduced ferromagnetic and superconducting orders in multiorbital Hubbard models

Sujay Ray; Philipp Werner

doi:10.1103/PhysRevB.110.L041109

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Photoinduced ferromagnetic and superconducting orders in multiorbital Hubbard models

Sujay Ray, Philipp Werner

DOI 10.1103/PhysRevB.110.L041109 · Physical Review B

T1

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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 nonequilibrium dynamical mean field theory we demonstrate the appearance of nonthermal ferromagnetic order in the photodoped state, if the two bandwidths are sufficiently different, and its coexistence with spin-singlet η superconductivity in the high photodoping region. Spin-triplet η-superconducting order appears instead if the two bandwidths are comparable. The rich nonequilibrium phasediagram uncovered in this work shows that Mott insulating multiorbital systems provide an interesting platform for the realization of nonthermal electronic orders.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
La3Ni2O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown