Doped graphene as tunable electron-phonon coupling material

Abstract

We present a new way to tune the electron-phonon coupling (EPC) in graphene by changing the deformation potential with electron/hole doping. We show the EPC for highest optical branch at the high symmetry point K, acquires a strong dependency on the doping level due to electron-electron correlation not accounted in mean-field approaches. Such a dependency influences the dispersion (with respect to the laser energy) of the Raman D and 2D lines and the splitting of the 2D peak in multi-layer graphene. Finally this doping dependence opens the possibility to construct tunable electronic devices through the external control of the EPC.

accepted for publication in NanoLetters (DOI: 10.1021/nl9034626)

References in corpus (34)

• Quantum ESPRESSO: a modular and open-source software project for quantum simulations of materials
• The electronic properties of graphene
• The Raman Fingerprint of Graphene
• Electrochemically Top Gated Graphene: Monitoring Dopants by Raman Scattering
• Spatially Resolved Raman Spectroscopy of Single- and Few-Layer Graphene
• High-Field Electrical Transport in Single-Wall Carbon Nanotubes
• Born-Oppenheimer Breakdown in Graphene
• Yambo: an \textit{ab initio} tool for excited state calculations
• Electric Field Effect Tuning of Electron-Phonon Coupling in Graphene
• Raman Spectroscopy of Graphene Edges
• Kohn Anomalies and Electron-Phonon Interaction in Graphite
• Raman Fingerprint of Charged Impurities in Graphene
• High-Field, Quasi-Ballistic Transport in Short Carbon Nanotubes
• Non-adiabatic Kohn-anomaly in a doped graphene monolayer
• First direct observation of Dirac fermions in graphite
• Scanning Tunneling Spectroscopy of Graphene on Graphite
• Electron-electron interactions and doping dependence of the two-phonon Raman intensity in graphene
• Electrical generation and absorption of phonons in carbon nanotubes
• Impact of the electron-electron correlation on phonon dispersions: failure of LDA and GGA functionals in graphene and graphite
• Phonon renormalisation in doped bilayer graphene
• Tight--binding description of the quasiparticle dispersion of graphite and few--layer graphene
• Electron Transport and Hot Phonons in Carbon Nanotubes
• Raman imaging of doping domains in graphene on SiO2
• Velocity Renormalization and Carrier Lifetime in Graphene from Electron-Phonon Interaction
• Electron-phonon coupling and electron self-energy in electron-doped graphene: calculation of angular resolved photoemission spectra
• Transport properties of graphene in the high-current limit
• Electron-Phonon Interactions in Graphene, Bilayer Graphene, and Graphite
• Gate tunable charged-phonon effect in bilayer graphene
• Interplay of Coulomb and electron-phonon interactions in graphene
• Phonon and Electronic Non-radiative Decay of Excitons in Carbon Nanotubes
• Graphene: A Pseudochiral Fermi Liquid
• Phonon-induced many-body renormalization of graphene electronic properties
• Tuning the electron-phonon coupling in multilayer graphene with magnetic fields
• Phonon surface mapping of graphite: disentangling quasi--degenerate phonon dispersions

Cited by in corpus (37)

• Symmetry-dependent phonon renormalization in monolayer MoS2 transistor
• Theory of double-resonant Raman spectra in graphene: intensity and line shape of defect-induced and two-phonon bands
• Seeing many-body effects in single- and few-layer graphene: Observation of two-dimensional saddle-point excitons
• First-principles calculations of charge carrier mobility and conductivity in bulk semiconductors and two-dimensional materials
• Interaction between graphene and copper substrate: The role of lattice orientation
• Electron-Phonon Interactions and the Intrinsic Electrical Resistivity of Graphene
• Manifestation of charged and strained graphene layers in the Raman response of graphite intercalation compounds
• Phonon-limited resistivity of graphene by first-principle calculations: electron-phonon interactions, strain-induced gauge field and Boltzmann equation
• Observation of Intra- and Inter-band Transitions in the Optical Response of Graphene
• Critical role of the exchange interaction for the electronic structure and charge-density-wave formation in TiSe2
• Phonons in potassium doped graphene: the effects of electron-phonon interactions, dimensionality and ad-atom ordering
• Dynamics of photoexcited carriers in graphene
• Screening of electron-phonon coupling in graphene on Ir(111)
• Strain Enhanced Superconductivity in Li-Doped Graphene
• Probing the electron-phonon coupling in ozone-doped graphene by Raman spectroscopy
• Density-functional calculation of static screening in 2D materials: the long-wavelength dielectric function of graphene
• Probing enhanced electron-phonon coupling in graphene by infrared resonance Raman spectroscopy
• Pressure-dependent Semiconductor to Semimetal and Lifshitz transitions in 2H-MoTe${}_2$: Raman and First-principles studies
• Magnetism and charge order in the honeycomb lattice
• Decay and Frequency Shift of Inter and Intravalley Phonons in Graphene -Dirac Cone Migration-
• Phonon-limited carrier mobility and resistivity from carbon nanotubes to graphene
• Hopping-resolved electron-phonon coupling in bilayer graphene
• Spectroscopic investigations of phonons in epitaxial graphene
• Correlation-Driven Electron-Hole Asymmetry in Graphene Field Effect Devices
• Infrared resonance Raman of bilayer graphene: signatures of massive fermions and band structure on the 2D peak
• Raman signature of electron-electron correlation in chemically doped few-layer graphene
• Periodic spatial variation of the electron-phonon interaction in epitaxial graphene on Ru(0001
• Phonon-Driven Electron Scattering and Magnetothermoelectric Effect in Two-Dimensional Tin Selenide
• Electronic properties of the Dirac and Weyl systems with first- and higher-order dispersion in non-Fermi-liquid picture
• Ab-initio Van der Waals electrodynamics: polaritons and electron scattering from plasmons and phonons in BN-capped graphene
• Optical Phonon Anomaly in Bilayer Graphene with Ultrahigh Carrier Densities
• Electric Field Effects on the Optical Vibrations in AB-Stacked Bilayer Graphene
• Electron-mediated anharmonicity and its role in the Raman spectrum of graphene
• Unusual spin-triplet superconductivity in monolayer graphene
• Insights into vibrational and electronic properties of MoS${}_2$ using Raman, photoluminescence and transport studies
• Exchange Enhancement of the Electron-Phonon Interaction: the Case of Weakly Doped Two-Dimensional Multivalley Semiconductors
• Doping dependence of the Raman spectrum of defected graphene