Topological phase transitions via attosecond x-ray absorption spectroscopy
arXiv:2407.03737 · doi:10.1088/1361-6633/ad889f
Abstract
We present a numerical experiment that demonstrates the possibility to capture topological phase transitions via an x-ray absorption spectroscopy scheme. We consider a Chern insulator whose topological phase is tuned via a second-order hopping. We perform time-dynamics simulations of the out-of-equilibrium laser-driven electron motion that enables us to model a realistic attosecond spectroscopy scheme. In particular, we use an ultrafast scheme with a circularly polarized IR pump pulse and an attosecond x-ray probe pulse. A laser-induced dichroism-type spectrum shows a clear signature of the topological phase transition. We are able to connect these signatures with the Berry structure of the system. This work extend the applications of attosecond absorption spectroscopy to systems presenting a non-trivial topological phase.
References in corpus (41)
- Topological Insulators
- Superconductors, Orbital Magnets, and Correlated States in Magic Angle Bilayer Graphene
- Colloquium: Topological Band Theory
- Photovoltaic Hall effect in graphene
- Transport properties of non-equilibrium systems under the application of light: Photo-induced quantum Hall insulators without Landau levels
- Light-induced anomalous Hall effect in graphene
- Valley-selective optical Stark effect in monolayer WS2
- Electronic structure of quantum materials studied by angle-resolved photoemission spectroscopy
- Photoinduced transition between conventional and topological insulators in two-dimensional electronic systems
- Theory of pump-probe photoemission in graphene: Ultrafast tuning of Floquet bands and local pseudospin textures
- Angle-resolved photoemission spectroscopy and its application to topological materials
- Theoretical description of time-resolved photoemission spectroscopy: application to pump-probe experiments
- High-harmonic generation in solids with and without topological edge states
- Dynamical preparation of Floquet Chern insulators
- Topological strong field physics on sub-laser cycle time scale
- Direct and Simultaneous Observation of Ultrafast Electron and Hole Dynamics in Germanium
- Topology and geometry under the nonlinear electromagnetic spotlight
- Introduction to theory of high-harmonic generation in solids: tutorial
- Measuring quantized circular dichroism in ultracold topological matter
- Circular dichroism in high-order harmonic generation: Heralding topological phases and transitions in Chern insulators
- Lightwave topology for strong-field valleytronics
- Imperfect Recollisions in High-Harmonic Generation in Solids
- Local Berry curvature signatures in dichroic angle-resolved photoelectron spectroscopy
- Density Matrix Topological Insulators
- Attosecond screening dynamics mediated by electron-localization
- Strong-field physics in three-dimensional topological insulators
- Lightwave-controlled band engineering in quantum materials
- High harmonic generation in crystals using Maximally Localized Wannier functions
- Quench-induced Floquet topological p-wave superfluids
- Unravelling the intertwined atomic and bulk nature of localised excitons by attosecond spectroscopy
- How Circular Dichroism in time- and angle-resolved photoemission can be used to spectroscopically detect transient topological states in graphene
- Detecting fractional Chern insulators through circular dichroism
- Topological Order Following a Quantum Quench
- Are there universal signatures of topological phases in high harmonic generation? Probably not
- Universal nonanalytic behavior of the Hall conductance in a Chern insulator at the topologically driven nonequilibrium phase transition
- Accurate Relativistic Real-Time Time-Dependent Density Functional Theory for Valence and Core Attosecond Transient Absorption Spectroscopy
- Tracing the nonequilibrium topological state of Chern insulators
- A theoretical approach for electron dynamics and ultrafast spectroscopy
- The imaginary part of the high-harmonic cutoff
- Fishbone resonance structure in the attosecond transient absorption spectroscopy of graphene
- Exciton migration in two-dimensional materials