Surface polar optical phonon interaction induced many-body effects and hot-electron relaxation in graphene

Abstract

We theoretically study various aspects of the electron-surface optical phonon interaction effects in graphene on a substrate made of polar materials. We calculate the electron self-energy in the presence of the surface phonon-mediated electron-electron interaction focusing on how the linear chiral graphene dispersion is renormalized by the surface phonons. The electron self-energy as well as the quasiparticle spectral function in graphene are calculated, taking into account electron-polar optical phonon interaction by using a many body perturbative formalism. The scattering rate of free electrons due to polar interaction with surface optical phonons in a dielectric substrate is calculated as a function of the electron energy, temperatures, and carrier density. Effects of screening on the self-energy and scattering rate are discussed. Our theory provides a comprehensive quantitative (and qualitative) picture for surface phonon interaction induced many-body effects and hot electron relaxation in Dirac materials.

10 pages, 10 figures

References in corpus (20)

• Ultrahigh electron mobility in suspended graphene
• Giant Intrinsic Carrier Mobilities in Graphene and Its Bilayer
• Suspended Graphene: a bridge to the Dirac point
• Intrinsic and Extrinsic Performance Limits of Graphene Devices on SiO2
• Dielectric function, screening, and plasmons in 2D graphene
• Controlling electron-phonon interactions in graphene at ultra high carrier densities
• Acoustic phonon scattering limited carrier mobility in 2D extrinsic graphene
• Substrate limited electron dynamics in graphene
• 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
• How close can one approach the Dirac point in graphene experimentally?
• Plasmon-phonon coupling in graphene
• Strong phonon-plasmon coupled modes in the graphene/silicon carbide heterosystem
• Phonon-induced many-body renormalization of graphene electronic properties
• Graphene Transport at High Carrier Densities using a Polymer Electrolyte Gate
• Transport in suspended graphene
• Density dependent electrical conductivity in suspended graphene: Approaching the Dirac point in transport
• Chirality-dependent phonon-limited resistivity in multiple layers of graphene
• Integrating Functional Oxides with Graphene
• Velocity renormalization and anomalous quasiparticle dispersion in extrinsic graphene