Ultrafast Electron-Phonon Decoupling in Graphite
arXiv:0712.1879 · doi:10.1103/PhysRevB.77.121402
Abstract
We report the ultrafast dynamics of the 47.4 THz coherent phonons of graphite interacting with a photoinduced non-equilibrium electron-hole plasma. Unlike conventional materials, upon photoexcitation the phonon frequency of graphite upshifts, and within a few picoseconds relaxes to the stationary value. Our first-principles density functional calculations demonstrate that the phonon stiffening stems from the light-induced decoupling of the non-adiabatic electron-phonon interaction by creating the non-equilibrium electron-hole plasma. Time-resolved vibrational spectroscopy provides a window on the ultrafast non-equilibrium electron dynamics.
4 pages, 4 figures
References in corpus (8)
- Two-Dimensional Gas of Massless Dirac Fermions in Graphene
- Phonons and related properties of extended systems from density-functional perturbation theory
- Born-Oppenheimer Breakdown in Graphene
- Kohn Anomalies and Electron-Phonon Interaction in Graphite
- Non-adiabatic Kohn-anomaly in a doped graphene monolayer
- Optical Phonons in Carbon Nanotubes: Kohn Anomalies, Peierls Distortions and Dynamic Effects
- All-electron theory of the coupling between laser-induced coherent phonons in bismuth
- Anomalous Quasiparticle Lifetime in Graphite: Band Structure Effects
Cited by in corpus (39)
- Nonthermal pathways to ultrafast control in quantum materials
- Ultrafast Photoluminescence from Graphene
- Nonlinear light-matter interaction at terahertz frequencies
- Ultrafast changes in lattice symmetry probed by coherent phonons
- Direct measurement of sub-10 fs relativistic electron beams with ultralow emittance
- Coherent and incoherent electron-phonon coupling in graphite observed with radio-frequency compressed ultrafast electron diffraction
- Manifestation of charged and strained graphene layers in the Raman response of graphite intercalation compounds
- Time-resolved Raman Spectroscopy of Optical Phonons in Graphite: Phonon Anharmonic Coupling and Anomalous Stiffening
- Cooling of photoexcited carriers in graphene by internal and substrate phonons
- Mapping momentum-dependent electron-phonon coupling and non-equilibrium phonon dynamics with ultrafast electron diffuse scattering
- Direct determination of mode-projected electron-phonon coupling in the time-domain
- Terahertz sum-frequency excitation of a Raman-active phonon
- Non-thermal hot electrons ultrafastly generating hot optical phonons in graphite
- Ultrafast dynamics of electrons and phonons: from the two-temperature model to the time-dependent Boltzmann equation
- Temperature dependence of the anharmonic decay of optical phonons in carbon nanotubes and graphite
- Nanoscale diffractive probing of strain dynamics in ultrafast transmission electron microscopy
- Frequency comb generation at THz frequencies by coherent phonon excitation in Si
- Non-adiabatic phonons within the doped graphene layers of XC compounds
- Novel Electron-Phonon Relaxation Pathway in Graphite Revealed by Time-Resolved Raman Scattering and Angle-Resolved Photoemission Spectroscopy
- Multi-gap topology and non-Abelian braiding of phonons from first principles
- Probing the energy conversion pathways between light, carriers and lattice in real time with attosecond core-level spectroscopy
- Coherent Phonons in Carbon Nanotubes and Graphene
- Intrinsic coherent acoustic phonons in indirect band gap semiconductors Si and GaP
- Spectrally resolved detection in transient-reflectivity measurements of coherent optical phonons in diamond
- Nonadiabatic coupling effects in MgB reexamined
- Ultrafast vibrational motion of carbon nanotubes in different pH environments
- Phonon-assisted electronic states modulation of few-layer PdSe2 at terahertz frequencies
- Phonon-assisted processes in the ultraviolet transient optical response of graphene
- Polarization Dependent Optical Control of Atomic Arrangement in Multilayer Ge-Sb-Te Phase Change Materials
- First-principles study of ultrafast dynamics of Dirac plasmon in graphene
- Concurrent probing of electron-lattice dephasing induced by photoexcitation in 1T-TaSeTe using ultrafast electron diffraction
- Real Space Raman Spectroscopy of Graphene Isotope Superlattices
- Fingerprints of hot-phonon physics in time-resolved correlated quantum lattice dynamics
- Modulation of probe signal in coherent phonon detection revisited: Analytical and first-principles computational analyses
- Electron-mediated anharmonicity and its role in the Raman spectrum of graphene
- Energy flow during relaxation in an electron-phonon system with multiple modes: A nonequilibrium Green's function study
- Polarization and driving force analysis of coherent optical shear phonons in graphite
- Properties and challenges of hot-phonon physics in metals: MgB and other compounds
- Light-induced shear phonon splitting and instability in bilayer graphene