Evidence for photoinduced sliding of the charge-order condensate in La${}_{1.875}$Ba${}_{0.125}$CuO${}_4$

Abstract

We use femtosecond resonant soft x-ray scattering to measure the ultrafast optical melting of charge-order correlations in La${}_{1.875}$Ba${}_{0.125}$CuO${}_4$. By analyzing both the energy-resolved and energy-integrated order parameter dynamics, we find evidence of a short-lived nonequilibrium state, whose features are compatible with a sliding charge density wave coherently set in motion by the pump. This transient state exhibits shifts in both the quasielastic line energy and its wave vector, as expected from a classical Doppler effect. The wave vector change is indeed found to directly follow the pump propagation direction. These results demonstrate the existence of sliding charge order behavior in an unconventional charge density wave system and underscore the power of ultrafast optical excitation as a tool to coherently manipulate electronic condensates.

8 pages, 9 figures, 39 references

References in corpus (5)

• The Ground State of the Pseudogap in Cuprate Superconductors
• Optically induced superconductivity in striped La2-xBaxCuO4 by polarization-selective excitation in the near infrared
• Phase Fluctuations and the Absence of Topological Defects in Photo-excited Charge Ordered Nickelate
• Melting of Charge Stripes in Vibrationally Driven La1.875Ba0.125CuO4: Assessing the Respective Roles of Electronic and Lattice Order in Frustrated Superconductors
• Restoring Interlayer Josephson Coupling in La_{1.885}Ba_{0.115}CuO_4 by Charge Transfer Melting of Stripe Order

Cited by in corpus (14)

• Enhanced charge density wave coherence in a light-quenched, high-temperature superconductor
• Probing light-driven quantum materials with ultrafast resonant inelastic X-ray scattering
• Exploring Quantum Materials with Resonant Inelastic X-Ray Scattering
• Witnessing Light-Driven Entanglement using Time-Resolved Resonant Inelastic X-Ray Scattering
• Antiphase Oscillations in the Time-Resolved Spin Structure Factor of a Photoexcited Mott Insulator
• Glassy heat capacity from overdamped phasons and a hypothetical phason-induced superconductivity in incommensurate structures
• Toward equilibrium ground state of charge density waves in rare-earth tritellurides
• A set-up for Hard X-ray Time-resolved Resonant Inelastic X-ray Scattering at SwissFEL
• Optically-induced Umklapp shift currents in striped cuprates
• A light-induced charge order mode in a metastable cuprate ladder
• Orbital-selective time-domain signature of nematicity dynamics in the charge-density-wave phase of La${}_{1.65}$Eu${}_{0.2}$Sr${}_{0.15}$CuO${}_4$
• An Exactly Solvable Model of Randomly Pinned Charge Density Waves in Two Dimensions
• Dynamical correlations and nonequilibrium sum rules in photodoped Hubbard ladders
• Interplay of Quantum and Thermal Fluctuations in Two-Dimensional Randomly Pinned Charge Density Waves