Multiorbital Hubbard models with Hund coupling and crystal-field splitting exhibit an instability toward spin-triplet excitonic order in the parameter regime characterized by strong local spin fluctuations. Upon chemical doping, two distinct types of excitonic ferromagnetism have been reported. Using steady-state nonequilibrium dynamical mean-field theory, we demonstrate that photodoped half-filled systems can host nonthermal counterparts of these excitonic phases and exhibit a rich phase diagram in the space of photodoping and crystal-field splitting. Photodoping a spin-triplet excitonic insulator provides a route towards nonequilibrium control of magnetic order.

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• Doublon
• Excited-state quantum phase transitions
• Exotic phases of matter
• Light-induced magnetic effects
• Magnetic phase transitions
• Magnetism
• Photoinduced effect
• Mott insulators
• Nonequilibrium systems
• Strongly correlated systems
• Diagrammatic methods
• Green's function methods
• Hubbard model
• Many-body techniques
• Nonequilibrium Green's function