Phase-ordering of charge density waves traced by ultrafast low-energy electron diffraction

Abstract

We introduce ultrafast low-energy electron diffraction (ULEED) in backscattering for the study of structural dynamics at surfaces. Using a tip-based source of ultrashort electron pulses, we investigate the optically-driven transition between charge-density wave phases at the surface of 1T-TaS2. The large transfer width of the instrument allows us to employ spot-profile analysis, resolving the phase-ordering kinetics in the nascent incommensurate charge-density wave phase. We observe a coarsening that follows a power-law scaling of the correlation length, driven by the annihilation of dislocation-type topological defects of the charge-ordered lattice. Our work opens up the study of a wide class of structural transitions and ordering phenomena at surfaces and in low-dimensional systems.

References in corpus (8)

• A Femtosecond Nanometer Free Electron Source
• Selective scattering between Floquet-Bloch and Volkov states in a topological insulator
• Direct measurement of sub-10 fs relativistic electron beams with ultralow emittance
• Highly coherent electron beam from a laser-triggered tungsten needle tip
• Phase Fluctuations and the Absence of Topological Defects in Photo-excited Charge Ordered Nickelate
• Femtosecond electrons probing currents and atomic structure in nanomaterials
• Watching the birth of a charge density wave order: diffraction study on nanometer-and picosecond-scales
• Direct observation of Space Charge Dynamics by picosecond Low Energy Electron Scattering

Cited by in corpus (67)

• Nonthermal pathways to ultrafast control in quantum materials
• Light-induced emergent phenomena in 2D materials and topological materials
• Light-Induced Charge Density Wave in LaTe${}_3$
• Disentangling amplitude and phase dynamics of a charge density wave in a photo-induced phase transition
• Optical Excitations with Electron Beams: Challenges and Opportunities
• Ultrafast nano-imaging of the order parameter in a structural phase transition
• Coherent control of a structural phase transition in a solid-state surface system
• Ultrafast manipulation of mirror domain walls in a charge density wave
• Tracking ultrafast solid-state dynamics using high harmonic spectroscopy
• Perspective on petahertz electronics and attosecond nanoscopy
• Electric Switching of the Charge-Density-Wave and Normal Metallic Phases in Tantalum Disulfide Thin-Film Devices
• Intertwined chiral charge orders and topological stabilization of the light-induced state of a prototypical transition metal dichalcogenide
• Ultrafast electron calorimetry uncovers a new long-lived metastable state in 1T-TaSe${}_2$ mediated by mode-selective electron-phonon coupling
• Excitonic and lattice contributions to the charge density wave in 1T-TiSe${}_2$ revealed by a phonon bottleneck
• Nonequilibrium Charge-Density-Wave Order Beyond the Thermal Limit
• Control of quantum electrodynamical processes by shaping electron wavepackets
• Self-similar dynamics of order parameter fluctuations in pump-probe experiments
• Charge-density-wave melting in the one-dimensional Holstein model
• Light-induced dimension crossover in 1T-TiSe${}_2$ dictated by excitonic correlations
• Light-induced hexatic state in a layered quantum material
• Ultrafast formation of topological defects in a 2D charge density wave
• A time-domain phase diagram of metastable states in a charge ordered quantum material
• Formation of buried domain walls in the ultrafast transition of SmTe${}_3$
• Role of equilibrium fluctuations in light-induced order
• Amplitude dynamics of charge density wave in LaTe${}_3$: theoretical description of pump-probe experiments
• Thermally-Driven Charge-Density-Wave Transitions in 1T-TaS2 Thin-Film Devices: Prospects for GHz Switching Speed
• Photo-induced nonequilibrium states in Mott insulators
• Excited state band mapping and momentum-resolved ultrafast population dynamics in In/Si(111) nanowires investigated with XUV based time- and angle-resolved photoemission spectroscopy
• Surface structure and stacking of the commensurate $\left(\sqrt{13}\times \sqrt{13}\right)$R13.9° charge density wave phase of 1T-TaS${}_2$(0001)
• A kiloelectron-volt ultrafast electron micro-diffraction apparatus using low emittance semiconductor photocathodes
• Real-time non-adiabatic dynamics in the one-dimensional Holstein model: Trajectory-based vs exact methods
• Doublon bottleneck in the ultrafast relaxation dynamics of hot electrons in 1T-TaS_2
• Unconventional light-induced states visualized by ultrafast electron diffraction and microscopy
• Endotaxial Stabilization of 2D Charge Density Waves with Long-range Order
• Domain size effects on the dynamics of a charge density wave in 1T-TaS2
• Machine learning for phase ordering dynamics of charge density waves
• Delamination-assisted ultrafast wrinkle formation in a freestanding film
• Quantum effects in the interaction of low-energy electrons with light
• Structural dynamics probed by high-coherence electron pulses
• Visualization of alternating triangular domains of charge density waves in 2H-NbSe${}_2$ by scanning tunneling microscopy
• Surface resonance of the (2$\times$1) reconstructed lanthanum hexaboride (001)-cleavage plane: a combined STM and DFT study
• Ab initio electron-lattice downfolding: potential energy landscapes, anharmonicity, and molecular dynamics in charge density wave materials
• Ultimate bunch length and emittance performance of an MeV ultrafast electron diffraction apparatus with a DC gun and a multi-cavity SRF linac
• Symmetry-protected electronic metastability in an optically driven cuprate ladder
• Melting of unidirectional charge density waves across twin domain boundaries in GdTe${}_3$
• Real-time evolution of static electron-phonon models in time-dependent electric fields
• Field theory for the dynamics of the open $O(N)$ model
• Structure and Non-Equilibrium Heat-Transfer of a Physisorbed Molecular Layer on Graphene
• Towards Time-Resolved Atomic Structure Determination by X-Ray Standing Waves at a Free-Electron Laser
• Megahertz cycling of ultrafast structural dynamics enabled by nanosecond thermal dissipation
• Evidence for reduced periodic lattice distortion within the Sb-terminated surface layer of the kagome metal CsV${}_3$Sb${}_5$
• Formation of Spatial Patterns by Spin-selective Excitations of Interacting Fermions
• Femtosecond trimer quench cycled at megahertz rates in the unconventional charge-density wave material $1\text{T’}-{\text{TaTe}}_2$
• Photo-induced Dynamics and Momentum Distribution of Chiral Charge Density Waves in 1T-TiSe${}_2$
• Dynamics of topological defects after a photo-induced melting of a charge-density wave
• Time-hidden magnetic order in a multi-orbital Mott insulator
• Bidirectional ultrafast control of charge density waves via phase competition
• Time evolution of the local density of states of strongly correlated fermions coupled to a nanoprobe
• Ultrafast Electron Diffraction: Visualizing Dynamic States of Matter
• A light-induced charge order mode in a metastable cuprate ladder
• Fate of transient order parameter domain walls in ultrafast experiments
• Ultrafast optical melting of trimer superstructure in layered 1T'-TaTe2
• Two-dimensional charge order stabilized in clean polytype heterostructures
• Ultrafast Momentum-Resolved Probing of Plasmon Thermal Dynamics with Free Electrons
• Tracking the local order parameter through the Hubbard exciton decoherence time in the Mott-Hubbard insulator LaVO3
• Mode-selective ballistic pathway to a metastable electronic phase
• Coherent X-ray Imaging of Stochastic Dynamics