Raman scattering from current-stabilized nonequilibrium phases in 
Ca2RuO4
Here, the authors study the current-stabilized nonequilibrium semimetallic and metallic phases in Ca${}_{2}$RuO${}_{4}$ by Raman light scattering. Using Raman thermometry, they find that Joule heating can be completely avoided by supplying sufficient cooling power. Additionally, they confirm the absence of long-range antiferromagnetic order and identify a substantial Fano broadening of several phonons, which suggests coupling to charge and orbital fluctuations. The results demonstrate that the semimetallic state is a genuine effect of the applied electrical current and that the current-induced phases have characteristics distinct from the equilibrium ones.