Decoding the ultrafast formation of a Fermi-Dirac distributed electron gas
arXiv:1804.01403 · doi:10.1103/PhysRevLett.121.256401
Abstract
Time- and angle-resolved photoelectron spectroscopy with 13 fs temporal resolution is used to follow the different stages in the formation of a Fermi-Dirac distributed electron gas in graphite after absorption of an intense 7 fs laser pulse. Within the first 50 fs after excitation a sequence of time frames is resolved which are characterized by different energy and momentum exchange processes among the involved photonic, electronic, and phononic degrees of freedom. The results reveal experimentally the complexity of the transition from a nascent non-thermal towards a thermal electron distribution due to the different timescales associated with the involved interaction processes.
arXiv comment11 pages, 8 figures; details on the time resolution, further information to Fig. 3, a goodness-of-fit analysis, and a few improvements added
References in corpus (22)
- Ultrafast graphene photodetector
- Graphene Mode-Locked Ultrafast Laser
- Ultrafast collinear scattering and carrier multiplication in graphene
- First direct observation of Dirac fermions in graphite
- Direct view on the ultrafast carrier dynamics in graphene
- Carrier Multiplication in Graphene
- Generation of photovoltage in graphene on a femtosecond time scale through efficient carrier heating
- Ultrafast Relaxation Dynamics of Hot Optical Phonons in Graphene
- Femtosecond Population Inversion and Stimulated Emission of Dense Dirac Fermions in Graphene
- Very Slow Cooling Dynamics of Photoexcited Carriers in Graphene Observed by Optical-Pump Terahertz-Probe Spectroscopy
- Impact of Auger processes on carrier dynamics in graphene
- Feasibility of terahertz lasing in optically pumped epitaxial multiple graphene layer structures
- Tracking primary thermalization events in graphene with photoemission at extreme timescales
- Anisotropy of excitation and relaxation of photogenerated Dirac electrons in graphene
- Microscopic mechanism for transient population inversion and optical gain in graphene
- Ultrafast pseudospin dynamics in graphene
- Theory of the electron relaxation in metals excited by an ultrashort optical pump
- Population Inversion in Monolayer and Bilayer Graphene
- Slow noncollinear Coulomb scattering in the vicinity of the Dirac point in graphene
- Ultrafast Momentum Imaging of Pseudospin-Flip Excitations in Graphene
- Polarized photoluminescence clocks ultrafast pseudospin relaxation in graphene
- Reassessing Graphene Absorption and Emission Spectroscopy
Cited by in corpus (28)
- Hot carriers in graphene -- fundamentals and applications
- Time- and Angle-Resolved Photoemission Studies of Quantum Materials
- Ultrafast intrinsic optical-to-electrical conversion dynamics in graphene photodetector
- Cavity-enhanced high harmonic generation for XUV time-resolved ARPES
- Time- and momentum-resolved photoemission studies using time-of-flight momentum microscopy at a free-electron laser
- Ultrafast dynamics of electrons and phonons: from the two-temperature model to the time-dependent Boltzmann equation
- Time-Resolved Momentum Microscopy with a 1 MHz High-Harmonic Extreme Ultraviolet Beamline
- Accessing the anisotropic non-thermal phonon populations in black phosphorus
- Time- and momentum-resolved phonon population dynamics with ultrafast electron diffuse scattering
- Coherent modulation of the electron temperature and electron-phonon couplings in a 2D material
- Theory of out-of-equilibrium electron and phonon dynamics in metals after ultrafast laser excitation
- Tracking the time-evolution of the electron distribution function in Copper by femtosecond broadband optical spectroscopy
- Probing the energy conversion pathways between light, carriers and lattice in real time with attosecond core-level spectroscopy
- Photoemission Signatures of Non-Equilibrium Carrier Dynamics from First Principles
- Self-energy dynamics and mode-specific phonon threshold effect in a Kekulé-ordered graphene
- Accessing the spectral function of in operando devices by angle-resolved photoemission spectroscopy
- Ultrafast electronic line width broadening in the C 1s core level of graphene
- Population inversion and Dirac fermion cooling in 3D Dirac semimetal CdAs
- Time-resolved ARPES on cuprates: Tracking the low-energy electrodynamics in the time domain
- Phonon-assisted processes in the ultraviolet transient optical response of graphene
- Observing photo-induced chiral edge states of graphene nanoribbons in pump-probe spectroscopies
- Excitation and Relaxation of Nonthermal Electron Energy Distributions in Metals with Application to Gold
- First-principles study of ultrafast dynamics of Dirac plasmon in graphene
- Time- and angle-resolved photoemission spectroscopy with wavelength-tunable pump and extreme ultraviolet probe enabled by twin synchronized amplifiers
- Time-Resolved Photoemission Spectroscopy of Quantum Materials Using High Harmonic Generation: Probing Electron-Phonon Interactions and Non-Equilibrium Dynamics
- Low-frequency interlayer phonon dynamics and photoinduced terahertz absorption in black phosphorus
- Modeling the relaxation processes of photoexcited solids: A short review
- Transient optical gain in strong-field-excited solids