Optical manipulation of electronic dimensionality in a quantum material

Abstract

Exotic phenomenon can be achieved in quantum materials by confining electronic states into two dimensions. For example, relativistic fermions are realised in a single layer of carbon atoms, the quantized Hall effect can result from two-dimensional (2D) systems, and the superconducting transition temperature can be enhanced significantly in a one-atomic-layer material. Ordinarily, 2D electronic system can be obtained by exfoliating the layered materials, growing monolayer materials on substrates, or establishing interfaces between different materials. Herein, we use femtosecond infrared laser pulses to invert the periodic lattice distortion sectionally in a three-dimensional (3D) charge density wave material, creating macroscopic domain walls of transient 2D ordered electronic states with exotic properties. The corresponding ultrafast electronic and lattice dynamics are captured by time- and angle-resolved photoemission spectroscopy and MeV ultrafast electron diffraction. Surprisingly, a novel energy gap state, which might be a signature of light-induced superconductivity, is identified in the photoinduced 2D domain wall near the surface. Such optical modulation of atomic motion is a new path to realise 2D electronic states and will be a new platform for creating novel phases in quantum materials.

arXiv comment31 pages, 10 figures

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Cited by in corpus (31)

• Light-induced emergent phenomena in 2D materials and topological materials
• Time- and Angle-Resolved Photoemission Studies of Quantum Materials
• Angle-resolved photoemission spectroscopy
• Transient dynamics of the phase transition in VO2 revealed by mega electron-volt ultrafast electron diffraction
• 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
• Reversible Non-Volatile Electronic Switching in a Near Room Temperature van der Waals Ferromagnet
• Ultrafast Switching from the Charge Density Wave Phase to a Metastable Metallic State in 1T-TiSe${}_2$
• Unconventional light-induced states visualized by ultrafast electron diffraction and microscopy
• Multi-mode excitation drives disorder during the ultrafast melting of a C4-symmetry-broken phase
• Imaging the photochemical dynamics of cyclobutanone with MeV ultrafast electron diffraction
• Ultrafast creation of a light induced semimetallic state in strongly excited 1T-TiSe${}_2$
• Electron correlations rule the phonon-driven instability in single layer TiSe${}_2$
• Non-invasive time-sorting in radio-frequency compressed ultrafast electron diffraction
• Anomalous contribution to the nematic electronic states from the structural transition in FeSe revealed by time- and angle-resolved photoemission spectroscopy
• Room-temperature non-volatile optical manipulation of polar order in a charge density wave
• Ultrafast all-optical manipulation of the charge-density-wave in VTe${}_2$
• Carrier-Density Control of the Quantum-Confined 1$T$-TiSe${}_2$ Charge-Density-Wave
• Creation of a novel inverted charge density wave state
• Photo-induced Dynamics and Momentum Distribution of Chiral Charge Density Waves in 1T-TiSe${}_2$
• Femtosecond trimer quench cycled at megahertz rates in the unconventional charge-density wave material $1\text{T’}-{\text{TaTe}}_2$
• Dynamics of topological defects after a photo-induced melting of a charge-density wave
• Electron-phonon-dominated charge-density-wave fluctuations in TiSe${}_2$ accessed by ultrafast nonequilibrium dynamics
• Ultrafast surface melting of orbital order in La0.5Sr1.5MnO4
• Time-hidden magnetic order in a multi-orbital Mott insulator
• Identification of metastable lattice distortion free charge density wave at photoinduced interface via TRARPES
• Ultrafast Electron Diffraction: Visualizing Dynamic States of Matter
• Superconducting gap and its Little-Parks like oscillations with high-order harmonics in lithium intercalated 1T-TiSe${}_2$
• Fate of transient order parameter domain walls in ultrafast experiments
• Revisiting the charge-density-wave superlattice of 1$T$-TiSe${}_2$