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Excitation by light pulses enables the manipulation of phases of quantumcondensed matter. Here, we photoexcite high-energy holon-doublon pairs as a wayto alter the magnetic free energy landscape of the Kitaev-Heisenberg magnet$\alpha$-RuCl$_3$, with the aim to dynamically stabilize a proximate spinliquid phase. The holon-doublon pair recombination through multimagnon emissionis tracked through the time-evolution of the magnetic linear dichroismoriginating from the competing zigzag spin ordered ground state. A smallholon-doublon density suffices to reach a spin disordered state. The phasetransition is described within a dynamic Ginzburg-Landau framework,corroborating the quasistationary nature of the transient spin disorderedphase. Our work provides insight into the coupling between the electronic andmagnetic degrees of freedom in $\alpha$-RuCl$_3$ and suggests a new route toreach a proximate spin liquid phase in Kitaev-Heisenberg magnets.

Nonequilibrium quasistationary spin disordered state in the Kitaev-Heisenberg magnet $\alpha$-RuCl$_3$