Optical manipulation of the topological phase in ZrTe5 revealed by time- and angle-resolved photoemission

Abstract

High-resolution time- and angle-resolved photoemission measurements were conducted on the topological insulator ZrTe5. With strong femtosecond photoexcitation, a possible ultrafast phase transition from a weak to a strong topological insulating phase was experimentally realized by recovering the energy gap inversion in a time scale that was shorter than 0.15 ps. This photoinduced transient strong topological phase can last longer than 2 ps at the highest excitation fluence studied, and it cannot be attributed to the photoinduced heating of electrons or modification of the conduction band filling. Additionally, the measured unoccupied electronic states are consistent with the first-principles calculation based on experimental crystal lattice constants, which favor a strong topological insulating phase. These findings provide new insights into the longstanding controversy about the strong and weak topological properties in ZrTe5, and they suggest that many-body effects including electron-electron interactions must be taken into account to understand the equilibrium weak topological insulating phase in ZrTe5.

References in corpus (45)

• Electron-Electron Interactions in Graphene: Current Status and Perspectives
• Observation of the chiral magnetic effect in ZrTe5
• Topological crystalline insulator states in Pb(1-x)Sn(x)Se
• Photo-Induced Topological Phase Transition and a Single Dirac-Cone State in Silicene
• Quantum Hall Effect from the Topological Surface States of Strained Bulk HgTe
• Topological Phase Transition and Texture Inversion in a Tunable Topological Insulator
• Three-dimensional quantum Hall effect and metal-insulator transition in ZrTe5
• Transition-Metal Pentatelluride ZrTe${}_5$ and HfTe${}_5$: a Paradigm for Large-gap Quantum Spin Hall Insulators
• Photoinduced transition between conventional and topological insulators in two-dimensional electronic systems
• Electronic Evidence of Temperature-Induced Lifshitz Transition and Topological Nature in ZrTe5
• Unexpected mass acquisition of Dirac fermions at the quantum phase transition of a topological insulator
• Magneto-infrared spectroscopy of Landau levels and Zeeman splitting of three-dimensional massless Dirac Fermions in ZrTe${}_5$
• Topological-Metal to Band-Insulator Transition in (Bi1-xInx)2Se3 Thin Films
• Robust topological edge states at the perfect surface step edge of topological insulator ZrTe${}_5$
• Transport evidence for the three-dimensional Dirac semimetal phase in ZrTe5
• Signatures of a Pressure-Induced Topological Quantum Phase Transition in BiTeI
• Evidence for a strain tuned topological phase transition in ZrTe5
• Pressure-induced semimetal to superconductor transition in a three-dimensional topological material ZrTe5
• Experimental evidence of large-gap two-dimensional topological insulator on the surface of ZrTe5
• Evidence for a Strong Topological Insulator Phase in $\mathrm{ZrT}{\mathrm{e}}_5$
• Landau level splitting in Cd3As2 under high magnetic fields
• Photoinduced topological phase transitions in strained black phosphorus
• Temperature-driven Topological Phase Transition and Intermediate Dirac Semimetal Phase in ZrTe${}_5$
• Visualization of the strain-induced topological phase transition in a quasi-one-dimensional superconductor TaSe3
• Light-Driven Raman Coherence as a Non-Thermal Route to Ultrafast Topology Switching
• Observation and control of the weak topological insulator state in ZrTe5
• 3D nature of ZrTe${}_5$ band structure measured by high-momentum-resolution photoemission spectroscopy
• Pressure-induced topological phase transition in noncentrosymmetric elemental Tellurium
• Observation of quasi-two-dimensional Dirac fermions in ZrTe5
• Non-Coulomb strong electron-hole binding in $T{a}_{2}NiS{e}_5$ revealed by time- and angle-resolved photoemission spectroscopy
• Field induced topological phase transition from a three-dimensional Weyl semimetal to a two-dimensional massive Dirac metal in ZrTe5
• Unraveling the Topological Phase of ZrTe${}_5$ via Magneto-infrared Spectroscopy
• Photoinduced topological phase transition from a crossing-line nodal semimetal to a multiple-Weyl semimetal
• Unconventional transformation of spin Dirac phase across a topological quantum phase transition
• Excitonic instability of three-dimensional gapless semiconductors: Large-N theory
• Photoinduced Dirac semimetal in ZrTe5
• Excitonic pairing and insulating transition in two-dimensional semi-Dirac semimetals
• A time- and angle-resolved photoemission spectroscopy with probe photon energy up to 6.7 eV
• Topological phase transition and phonon-space Dirac topology surfaces in ZrTe${}_5$
• Ultrafast hot carrier dynamics of ZrTe${}_5$ from time-resolved optical reflectivity
• Topological Phase Transitions and Quantum Hall Effect in the Graphene Family
• Gap-opening transition in Dirac semimetal ZrTe${}_5$
• Ultrafast Dynamics of the Surface Photovoltage in Potassium Doped Black Phosphorus
• Photoinduced anomalous Hall effect in the interacting Haldane model: targeting topological states with pump pulses
• Real-time dynamics of the photoinduced topological state in organic conductor $\alpha$-(BEDT-TTF)${}_2$I${}_3$ under continuous-wave and pulse excitations