We point out that fractionalized bosonic charge excitations can explain the recently discovered photoinduced superconducting-like response in ${\kappa \text{-(ET})}_2\text{Cu}\left[{\text{N(CN)}}_2\right]\text{Br}$, an organic metal close to the Mott transition. The pump laser exerts a periodic drive on the fractionalized field, creating a nonequilibrium condensate, which gives a Drude peak much narrower than the equilibrium scattering rate, hence a superconducting-like response. Our proposal illuminates alternative possibilities of detecting fractionalization and can be readily tested in spin liquid candidates and in cold atom systems.

Close

PrevNext

View figure in article

• Cold atoms & matter waves
• Spin liquid
• Superconductivity
• Nonequilibrium systems
• Strongly correlated systems