A metallic mosaic phase and the origin of Mott insulating state in 1T-TaS2

Abstract

Electron-electron and electron-phonon interactions are two major driving forces that stabilize various charge-ordered phases of matter. The intricate interplay between the two give rises to a peculiar charge density wave (CDW) state, which is also known as a Mott insulator, as the ground state of layered compound 1T-TaS2. The delicate balance also makes it possible to use external perturbations to create and manipulate novel phases in this material. Here, we study a mosaic CDW phase induced by voltage pulses from the tip of a scanning tunneling microscope (STM), and find that the new phase exhibit electronic structures that are entirely different from the Mott ground state of 1T-TaS2 at low temperatures. The mosaic phase consists of nanometer-sized domains characterized by well-defined phase shifts of the CDW order parameter in the topmost layer, and by altered stacking relative to the layer underneath. We discover that the nature of the new phases is dictated by the stacking order, and our results shed fresh light on the origin of the Mott phase in this layered compound.

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Cited by in corpus (100)

• Nanoscale manipulation of the Mott insulating state coupled to charge order in 1T-TaS2
• Visualizing Exotic Orbital Texture in the Single-Layer Mott Insulator 1T-TaSe2
• Band insulator to Mott insulator transition in 1T-TaS${}_2$
• A new high-temperature quantum spin liquid with polaron spins
• Imaging spinon density modulations in a 2D quantum spin liquid
• Mottness versus unit-cell doubling as the driver of the insulating state in 1T-TaS2
• Disrupted orbital order and the pseudo-gap in layered 1T-TaS${}_2$
• Ultrafast manipulation of mirror domain walls in a charge density wave
• Atomic Lattice Disorder in Charge Density Wave Phases of Exfoliated Dichalcogenides (1T-TaS2)
• Influence of domain walls in the incommensurate charge density wave state of Cu intercalated 1$T$-TiSe${}_2$
• Collapse of layer dimerization in the photo-induced hidden state of 1T-TaS2
• Orbital-driven Mottness collapse in 1T-TaS2-xSex transition metal dichalcogenide
• The low-temperature highly correlated quantum phase in the charge-density-wave 1T-TaS_2 compound
• Direct identification of Mott Hubbard band pattern beyond charge density wave superlattice in monolayer 1T-NbSe2
• Aperiodic topological order in the domain configurations of functional materials
• Ultrafast jamming of electrons into an amorphous entangled state
• Electric Switching of the Charge-Density-Wave and Normal Metallic Phases in Tantalum Disulfide Thin-Film Devices
• Correlated electronic states at domain walls of a Mott-charge-density-wave insulator 1T-TaS2
• Coexistence of Multiple Stacking Charge Density Waves in Kagome Superconductor ${\mathrm{CsV}}_3{\mathrm{Sb}}_5$
• Coulomb Correlations in 4d and 5d Oxides from First Principles - or How Spin-Orbit Materials choose their Effective Orbital Degeneracies
• Low-Frequency Noise and Sliding of the Charge Density Waves in Two-Dimensional Materials
• Intertwined chiral charge orders and topological stabilization of the light-induced state of a prototypical transition metal dichalcogenide
• Distinguishing a Mott Insulator from a Trivial Insulator with Atomic Adsorbates
• Emergent Honeycomb Network of Topological Excitations in Correlated Charge Density Wave
• Competing Coulomb and electron-phonon interactions in NbS${}_2$
• Strength of effective Coulomb interaction in two-dimensional transition-metal Halides MX${}_2$ and MX${}_3$ (M=Ti, V, Cr, Mn, Fe, Co, Ni; X=Cl, Br, I)
• Roles of the Narrow Electronic Band near the Fermi Level in 1T-TaS${}_2$-Related Layered Materials
• Atomic-Scale Visualization of Chiral Charge Density Wave States and Their Reversible Transition
• Distinct surface and bulk charge density waves in ultrathin 1T-TaS2
• Photoexcitation Induced Quantum Dynamics of Charge Density Wave and Emergence of a Collective Mode in 1T-TaS${}_2$
• Effect of Stacking Order on the Electronic State of 1T-TaS${}_2$
• Electrical switching of ferro-rotational order in nano-thick 1T-TaS${}_2$ crystals
• Possible strain induced Mott gap collapse in 1T-TaS${}_2$
• Mott insulator tuning via structural distortion in monolayer 1T-NbSe2
• Mottness collapse without metallisation in the domain walls of triangular-lattice Mott insulator 1T-TaS${}_2$
• Unconventional hysteretic transition in a charge density wave
• 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
• Proton-Irradiation-Immune Electronics Implemented with Two-Dimensional Charge-Density-Wave Devices
• Zoology of domain walls in quasi-2D correlated charge density wave of 1T-TaS2
• Photocurrent Imaging of Multi-Memristive Charge Density Wave Switching in Two-Dimensional 1T-TaS2
• Low-Frequency Noise Spectroscopy of Charge-Density-Wave Phase Transitions in Vertical Quasi-2D Devices
• Stacking order dynamic in the quasi-two-dimensional dichalcogenide 1T-TaS${}_2$ probed with MeV ultrafast electron diffraction
• Two-dimensional charge density wave TaX${}_2$ (X=S, Se, Te) from first principles
• Thermally-Driven Charge-Density-Wave Transitions in 1T-TaS2 Thin-Film Devices: Prospects for GHz Switching Speed
• Realization of metallic state in 1T-TaS2 with persisting long-range order of charge density wave
• Snapshots of a light-induced metastable hidden phase driven by the collapse of charge order
• Depinning of the Charge-Density Waves in Quasi-2D 1T-TaS2 Devices Operating at Room Temperature
• Suppression of charge density wave phases in ultrathin 1T-TaS2
• Probing the coupling between a doublon excitation and the charge-density wave in TaS2 by ultrafast optical 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)
• Spin-orbit and exchange proximity couplings in graphene/1T-TaS${}_2$ heterostructure triggered by a charge density wave
• Reconcile the Bulk Metallic and Surface Insulating state in 1T-TaSe${}_2$
• Stacking effect and Coulomb correlation in layered charge density wave phase of 1T-NbS2
• Deconfinement of Mott Localized Electrons into Topological and Spin-Orbit Coupled Dirac Fermions
• Large optical tunability from charge density waves in 1T-TaS${}_2$ under incoherent illumination
• Quantum billiards with correlated electrons confined in triangular transition metal dichalcogenide monolayer nanostructures created by laser quench
• Nonlinear optical study of commensurability effects in graphene-hBN heterostructures
• Unconventional light-induced states visualized by ultrafast electron diffraction and microscopy
• Current Oscillations in Quasi-2D Charge-Density-Wave 1T-TaS2 Devices: Revisiting the "Narrow Band Noise" Concept
• Configurational Electronic States in Layered Metallic Dichalcogenides
• Tunneling-tip-induced collapse of the charge gap in the excitonic insulator Ta${}_2$NiSe${}_5$
• Charge density wave surface reconstruction in a van der Waals layered material
• Honeycomb-Lattice Mott insulator on Tantalum Disulphide
• Charge order with unusual star-of-David lattice in monolayer NbTe2
• Observation of a multitude of correlated states at the surface of bulk 1T-TaSe${}_2$ crystals
• Mott materials: unsuccessful metals with a bright future
• Ultra-Efficient Resistance Switching between Charge Ordered Phases in 1T-TaS${}_2$ with a Single Picosecond Electrical Pulse
• Revealing the Charge Density Wave Proximity Effect in Graphene on 1T-TaS${}_2$
• Bi-2212/1T-TaS${}_2$ Van der Waals junctions: Interplay of proximity induced high-$T_c$ superconductivity and CDW order
• The electric pulses induced multi-resistance states in the hysteresis temperature range of 1T-TaS2 and 1T-TaS1.6Se0.4
• Pseudogap and weak multifractality in disordered Mott charge-density-wave insulator
• Appearance of a Domain Structure and its Electronic states in Iron Doped 1$T$-TaS${}_2$ Observed using Scanning Tunneling Microscopy and Spectroscopy
• Mobile Kink Solitons in a Van der Waals Charge-Density-Wave Layer
• Effects of Structural Distortions on the Electronic Structure of T-type Transition Metal Dichalcogenides
• Friction Anomalies at First-Order Transition Spinodals: 1T-TaS${}_2$
• Observation and manipulation of a phase separated state in a charge density wave material
• Lattice-Driven Chiral Charge Density Wave State in 1T-TaS${}_2$
• Moiré Modulation of Charge Density Waves
• Interlayer Hopping between Surface Mott Insulator and Bulk Band Insulator in layered 1T-TaS_{2}
• Dynamic phase transition into a mixed-CDW state in 1$T$-TaS${}_2$ via a thermal quench
• Phase transitions and pattern formation in ensembles of phase-amplitude solitons in quasi-one-dimensional electronic systems
• Unconventional orbital-charge density wave mechanism in transition metal dichalcogenide 1T-TaS2
• Interplay of broken symmetry and delocalized excitations in the insulating state of 1$T$-TaS${}_2$
• Behavior under magnetic field of resonance at the edge of the upper Hubbard band in 1T-TaS2
• Large-scale Integration of Experimental and Computational Data for 2D Materials
• Ramp reversal memory in bulk crystals of 1T-TaS2
• Emergent Quantum Phenomena of Noncentrosymmetric Charge-Density Wave in 1T-Transition Metal Dichalcogenides
• Evidence for bootstrap percolation dynamics in a photo-induced phase transition
• Three-dimensional resistivity switching between correlated electronic states in 1T-TaS2
• Multimorphism and gap opening of charge-density-wave phases in monolayer VTe2
• Topical review: the nature of the ground state and possibility of a quantum spin liquid in 1T metal dichalcogenides
• Imaging of electrically controlled van der Waals layer stacking in 1T-TaS2
• Nanoscale Modulation of Flat Bands via Controllable Charge-Density-Waves Defects in 4Hb-TaS2
• Origin of Stripe and Quasi-Stripe CDW Structures in Monolayer MX${}_2$ compounds: Multivalley Free Energy Landscape
• Effect of Interlayer Stacking on the Electronic Properties of 1$T$-TaS${}_2$
• Scanning tunneling microscopy study of hidden phases in atomically thin 1T-TaS${}_2$
• Electronic Coherence Evolution at the Nearly Commensurate Incommensurate CDW Boundary of 1T-TaS2
• Toward nonthermal control of excited quantum materials: framework and investigations by ultrafast electron scattering and imaging
• Emergent quantum phenomena in two-dimensional 1T-TaS2