The phase transition of VO 2 from a monoclinic insulator to a rutile metal, which occurs
thermally at TC= 340 K, can also be driven by strong photoexcitation. The ultrafast dynamics …

At the interface of classical and quantum physics, the Maxwell and Schrödinger equations
describe how optical fields drive and control electronic phenomena to enable lightwave …

Light at optical frequencies interacting with a metal surface can excite interband quantum
transitions, or intraband currents at frequencies approaching the PHz range. Momentum …

Time-and angle-resolved photoemission spectroscopy (trARPES) is a powerful
spectroscopic method to measure the ultrafast electron dynamics directly in momentum …

Depending on the applied strength, electromagnetic fields in electronic materials can induce
dipole transitions between eigenstates or distort the Coulomb potentials that define them …

Excitons, the particle-hole bound states, composed of localized electron-hole states in
semiconducting systems, are crucial to explaining the optical spectrum. Spectroscopic …

Hot electron processes at metallic heterojunctions are central to optical-to-chemical or
electrical energy transduction. Ultrafast nonlinear photoexcitation of graphite (Gr) has been …

In this work we put forward a first-principles approach and propose an accurate
diagrammatic approximation to calculate the time-resolved (TR) and angle-resolved …

Photons can excite collective and single-particle excitations in metals; the collective
plasmonic excitations are of keen interest in physics, chemistry, optics, and nanotechnology …

An excitonic insulator phase is expected to arise from the spontaneous formation of electron–
hole pairs (excitons) in semiconductors where the exciton binding energy exceeds the size …