Evidence for photoinduced sliding of the charge-order condensate in LaBaCuO
arXiv:1911.08037 · doi:10.1103/PhysRevB.100.205125
Abstract
We use femtosecond resonant soft x-ray scattering to measure the ultrafast optical melting of charge-order correlations in LaBaCuO. 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.
arXiv comment8 pages, 9 figures, 39 references
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- 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 LaEuSrCuO
- An Exactly Solvable Model of Randomly Pinned Charge Density Waves in Two Dimensions
- Interplay of Quantum and Thermal Fluctuations in Two-Dimensional Randomly Pinned Charge Density Waves
- Dynamical correlations and nonequilibrium sum rules in photodoped Hubbard ladders