Orbital textures and charge density waves in transition metal dichalcogenides

Abstract

Low-dimensional electron systems, as realized naturally in graphene or created artificially at the interfaces of heterostructures, exhibit a variety of fascinating quantum phenomena with great prospects for future applications. Once electrons are confined to low dimensions, they also tend to spontaneously break the symmetry of the underlying nuclear lattice by forming so-called density waves; a state of matter that currently attracts enormous attention because of its relation to various unconventional electronic properties. In this study we reveal a remarkable and surprising feature of charge density waves (CDWs), namely their intimate relation to orbital order. For the prototypical material 1T-TaS2 we not only show that the CDW within the two-dimensional TaS2-layers involves previously unidentified orbital textures of great complexity. We also demonstrate that two metastable stackings of the orbitally ordered layers allow to manipulate salient features of the electronic structure. Indeed, these orbital effects enable to switch the properties of 1T-TaS2 nanostructures from metallic to semiconducting with technologically pertinent gaps of the order of 200 meV. This new type of orbitronics is especially relevant for the ongoing development of novel, miniaturized and ultra-fast devices based on layered transition metal dichalcogenides.

References in corpus (12)

• Skyrmion Lattice in a Chiral Magnet
• Angle-resolved photoemission spectroscopy of the cuprate superconductors
• Magnetic Order versus superconductivity in the Iron-based layered La(O1-xFx)FeAs systems
• Long-range incommensurate charge fluctuations in (Y,Nd)Ba2Cu3O(6+x)
• Direct observation of competition between superconductivity and charge density wave order in YBa2Cu3Oy
• Ultrafast switching to a stable hidden topologically protected quantum state in an electronic crystal
• Ubiquitous Interplay between Charge Ordering and High-Temperature Superconductivity in Cuprates
• Unfolding first-principles band structures
• Momentum-dependent snapshots of a melting charge density wave
• Ultrafast melting of a charge-density wave in the Mott insulator 1T-TaS2
• Three Dimensional Metallic and Two Dimensional Insulating Behavior in Tantalum Dichalcogenides
• Remnant Fermi surface in the presence of an underlying instability in layered 1T-TaS_2

Cited by in corpus (135)

• Memristive phase switching in two-dimensional crystals
• A metallic mosaic phase and the origin of Mott insulating state in 1T-TaS2
• 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
• \textit{Ab-initio} Tight-Binding Hamiltonian for Transition Metal Dichalcogenides
• Topological Materials Discovery from Crystal Symmetry
• Electronic Structure Theory of Weakly Interacting Bilayers
• Band insulator to Mott insulator transition in 1T-TaS${}_2$
• Berry curvature dipole current in transition metal dichalcogenides family
• Phase-ordering of charge density waves traced by ultrafast low-energy electron diffraction
• 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
• Ultrafast nano-imaging of the order parameter in a structural phase transition
• Disrupted orbital order and the pseudo-gap in layered 1T-TaS${}_2$
• Atomic Lattice Disorder in Charge Density Wave Phases of Exfoliated Dichalcogenides (1T-TaS2)
• Inversion-protected higher order topological superconductivity in monolayer WTe${}_2$
• Ultrafast doublon dynamics in photo-excited 1T-TaS${}_2$
• Robust charge-density wave strengthened by electron correlations in monolayer 1T-TaSe2 and 1T-NbSe2
• Collapse of layer dimerization in the photo-induced hidden state of 1T-TaS2
• Zone-center phonons of bulk, few-layer, and monolayer 1T-TaS${}_2$: Detection of the commensurate charge density wave phase through Raman scattering
• The low-temperature highly correlated quantum phase in the charge-density-wave 1T-TaS_2 compound
• Orbital-driven Mottness collapse in 1T-TaS2-xSex transition metal dichalcogenide
• Monolayer 1T-NbSe2 as a 2D correlated magnetic insulator
• Direct identification of Mott Hubbard band pattern beyond charge density wave superlattice in monolayer 1T-NbSe2
• Electronic Structure Theory of Strained Two-Dimensional Materials with Hexagonal Symmetry
• Ultrafast jamming of electrons into an amorphous entangled state
• Aperiodic topological order in the domain configurations of functional materials
• Correlated electronic states at domain walls of a Mott-charge-density-wave insulator 1T-TaS2
• Coulomb Correlations in 4d and 5d Oxides from First Principles - or How Spin-Orbit Materials choose their Effective Orbital Degeneracies
• 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
• Traces of Charge Density Waves in NbS${}_2$
• Emergent Honeycomb Network of Topological Excitations in Correlated Charge Density Wave
• Orbital density wave order and electronic correlation driven insulating 1T-TaS2 monolayer
• Room Temperature Magnetic Order in Air-Stable Ultra-Thin Iron Oxide
• Visualization of Chiral Electronic Structure and Anomalous Optical Response in a Material with Chiral Charge Density Waves
• Strain Engineering a $4a\times \sqrt{3}a$ Charge Density Wave Phase in Transition Metal Dichalcogenide 1T-VSe${}_2$
• Quasi one-dimensional metallic band dispersion in the commensurate charge density wave of $1T$-TaS${}_2$
• 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
• Coherent modulation of the electron temperature and electron-phonon couplings in a 2D material
• Charge-density-wave phase, mottness and ferromagnetism in monolayer $1T$-NbSe${}_2$
• Preferential out-of-plane conduction and quasi-one-dimensional electronic states in layered 1T-TaS2
• Photoexcitation Induced Quantum Dynamics of Charge Density Wave and Emergence of a Collective Mode in 1T-TaS${}_2$
• Distinct surface and bulk charge density waves in ultrathin 1T-TaS2
• Effect of Stacking Order on the Electronic State of 1T-TaS${}_2$
• Charge density wave instability and pressure-induced superconductivity in bulk 1T-NbS2
• Electrical switching of ferro-rotational order in nano-thick 1T-TaS${}_2$ crystals
• Possible strain induced Mott gap collapse in 1T-TaS${}_2$
• Identification of the Mott insulating CDW state in 1T-TaS${}_2$
• Mott versus hybridization gap in the low-temperature phase of $1T$-TaS${}_2$
• Mott insulator tuning via structural distortion in monolayer 1T-NbSe2
• Out-of-plane transport of 1T-TaS2/graphene-based van der Waals heterostructures
• Mottness collapse without metallisation in the domain walls of triangular-lattice Mott insulator 1T-TaS${}_2$
• Real-time observation of the coherent transition to a metastable emergent state in 1T-TaS${}_2$
• Scanning tunneling spectroscopy of superconductivity on surfaces of LiTi2O4(111) thin films
• Stable Flatbands, Topology, and Superconductivity of Magic Honeycomb Networks
• Stacking order dynamic in the quasi-two-dimensional dichalcogenide 1T-TaS${}_2$ probed with MeV ultrafast electron diffraction
• Ab initio calculation of the effective Coulomb interactions in MX2 (M=Ti, V, Cr, Mn, Fe, Co, Ni; X=S, Se, Te): intrinsic magnetic ordering and Mott insulating phase
• Snapshots of a light-induced metastable hidden phase driven by the collapse of charge order
• Inducing and tuning Kondo screening in a narrow-electronic-band system
• Orbital Fingerprint of Topological Fermi Arcs in a Weyl Semimetal
• Nonconventional screening of Coulomb interaction in two-dimensional semiconductors and metals: A comprehensive cRPA study of MX2 (M=Mo, W, Nb, Ta; X=S, Se, Te)
• Chiral charge density waves induced by Ti-doping in 1T-TaS2
• 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
• Coupling between Charge, Lattice, Orbital, and Spin in a Charge Density Wave of 1$T$-TaS${}_2$
• Effective Ising model for correlated systems with charge ordering
• Electronic and Optical properties of transition metal dichalcogenides under symmetric and asymmetric field-effect doping
• 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)
• Fermiology and electron-phonon coupling in the 2H and 3R polytypes of NbS${}_2$
• Visualizing the out-of-plane electronic dispersions in an intercalated transition metal dichalcogenide
• 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
• Large optical tunability from charge density waves in 1T-TaS${}_2$ under incoherent illumination
• Modified interlayer stacking and insulator to correlated-metal transition driven by uniaxial strain in 1$T$-TaS${}_2$
• Doublon bottleneck in the ultrafast relaxation dynamics of hot electrons in 1T-TaS_2
• Configurational Electronic States in Layered Metallic Dichalcogenides
• 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
• Photo-induced charge dynamics in 1$T$-TaS${}_2$
• Theoretical description of pump/probe experiments in electron mediated charge-density-wave insulators
• Honeycomb-Lattice Mott insulator on Tantalum Disulphide
• Observation of orbital order in the Van der Waals material 1T-TiSe2
• Charge density wave surface reconstruction in a van der Waals layered material
• Electrical Stressing Induced Monolayer Vacancy Island Growth on TiSe2
• Observation of a multitude of correlated states at the surface of bulk 1T-TaSe${}_2$ crystals
• Charge-Stripe Order and Superconductivity in $\mathrm{I}{\mathrm{r}}_{1-\mathrm{x}}\mathrm{P}{\mathrm{t}}_{\mathrm{x}}\mathrm{T}{\mathrm{e}}_2$
• Understanding the flat band in 1T-TaS2 using a rotated basis
• 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
• Model Hamiltonian for strongly-correlated systems: Systematic, self-consistent, and unique construction
• Mobile Kink Solitons in a Van der Waals Charge-Density-Wave Layer
• Origin of Distinct Insulating Domains in the Layered Charge Density Wave Material 1T-TaS2
• Orbital-selective charge-density wave in TaTe${}_4$
• Spectroscopic evidence for possible quantum spin liquid behavior in a two-dimensional Mott insulator
• Effects of Structural Distortions on the Electronic Structure of T-type Transition Metal Dichalcogenides
• Engineering Interlayer Hybridization in Energy Space via Dipolar Overlayers
• Distinguishing and controlling Mottness in 1T-TaS${}_2$ by ultrafast light
• Nature of metallic and insulating domains in the CDW system 1T-TaSe2
• Renormalization of the Mott gap by lattice entropy: The case of 1T-TaS2
• Photoinduced Dynamics of Commensurate Charge Density Wave in 1T-TaS${}_2$ Based on Three-Orbital Hubbard Model
• Observation and manipulation of a phase separated state in a charge density wave material
• Orbital textures and evolution of correlated insulating state in monolayer 1T phase transition metal dichalcogenides
• Impact ionization dynamics in small band-gap 2D materials from a coherent phonon mechanism
• Revealing the hidden order in BaTi2As2O via nuclear magnetic resonance
• Dynamic phase transition into a mixed-CDW state in 1$T$-TaS${}_2$ via a thermal quench
• Interlayer Hopping between Surface Mott Insulator and Bulk Band Insulator in layered 1T-TaS_{2}
• Interplay of broken symmetry and delocalized excitations in the insulating state of 1$T$-TaS${}_2$
• Probing complex stacking in a layered material via electron-nuclear quadrupolar coupling
• Probing enhanced superconductivity in van der Waals polytypes of V${}_x$TaS${}_2$
• Hidden electronic phase in strained few-layer 1T-TaS2
• Behavior under magnetic field of resonance at the edge of the upper Hubbard band in 1T-TaS2
• Fingerprints of entangled spin and orbital physics in itinerant ferromagnets via angle resolved $resonant$ photoemission
• Negative differential resistance state in the free-flux-flow regime of driven vortices in a single crystal of 2H-NbS${}_2$
• Observation of Resonance of Kagome Flat Band Doublet
• Comparative study of Kondo effect in Vanadium dichalcogenides VX${}_2$ (X=Se & Te)
• Stacking of charge-density waves in 2H-NbSe${}_2$ bilayers
• Electron-phonon coupling in EuAl4 under hydrostatic pressure
• Emergent Quantum Phenomena of Noncentrosymmetric Charge-Density Wave in 1T-Transition Metal Dichalcogenides
• Optical amplification in a CDW-phase of a quasi-two dimensional material
• Charge Density Waves in the 2.5-Dimensional Quantum Heterostructure
• Possibility of charge density wave transition in SrPt${}_2$Sb${}_2$ superconductor
• Three-dimensional resistivity switching between correlated electronic states in 1T-TaS2
• Topical review: the nature of the ground state and possibility of a quantum spin liquid in 1T metal dichalcogenides
• Nonvolatile optical control of interlayer stacking order in 1T-TaS2
• Effect of Interlayer Stacking on the Electronic Properties of 1$T$-TaS${}_2$
• Interlayer coupling driven phase evolution in hyperbolic $1T$-TaS${}_2$
• Discovery of Giant Unit-Cell Super-Structure in the Infinite-Layer Nickelate PrNiO${}_2$
• Emergent quantum phenomena in two-dimensional 1T-TaS2
• Strongly Enhanced Charge-Density Waves and Correlated Insulating State in Atomically Thin 1$T$-TaS${}_2$
• Phase diagram of the two-dimensional Hubbard-Holstein model: enhancement of $s$-wave pairing between charge and magnetic orders
• Emergent surface resonance from charge density wave symmetry breaking in TiSe2
• Electronic Coherence Evolution at the Nearly Commensurate Incommensurate CDW Boundary of 1T-TaS2
• Ultrafast Electronic Structure Engineering in 1$T$-TaS${}_2$: Role of Doping and Amplitude Mode Dynamics