Symmetry-breaking supercollisions in Landau-quantized graphene
arXiv:1801.08463 · doi:10.1103/PhysRevLett.119.067405
Abstract
Recent pump-probe experiments performed on graphene in a perpendicular magnetic field have revealed carrier relaxation times ranging from picoseconds to nanoseconds depending on the quality of the sample. To explain this surprising behavior, we propose a novel symmetry-breaking defect-assisted relaxation channel. This enables scattering of electrons with single out-of-plane phonons, which drastically accelerate the carrier scattering time in low-quality samples. The gained insights provide a strategy for tuning the carrier relaxation time in graphene and related materials by orders of magnitude.
References in corpus (24)
- The electronic properties of graphene
- Electronic Properties of Graphene in a Strong Magnetic Field
- Measurement of Ultrafast Carrier Dynamics in Epitaxial Graphene
- Approaching the Dirac point in high mobility multi-layer epitaxial graphene
- Probing the Intrinsic Properties of Exfoliated Graphene: Raman Spectroscopy of Free-Standing Monolayers
- Electron-electron interactions and doping dependence of the two-phonon Raman intensity in graphene
- Large area and structured epitaxial graphene produced by confinement controlled sublimation of silicon carbide
- Raman spectra of epitaxial graphene on SiC and of epitaxial graphene transferred to SiO2
- Photocurrent measurements of supercollision cooling in graphene
- Disorder-Assisted Electron-Phonon Scattering and Cooling Pathways in Graphene
- Carrier dynamics in epitaxial graphene close to the Dirac point
- Few layer graphene on SiC, pyrolitic graphite and graphene: a Raman scattering study
- Flexural phonons in free-standing graphene
- Supercollision cooling in undoped graphene
- Atomistic simulations of the implantation of low energy boron and nitrogen ions into graphene
- Temperature-dependent resistivity of suspended graphene
- Epitaxial Graphene Electronic Structure And Transport
- Carrier scattering from dynamical magneto-conductivity in quasi-neutral epitaxial graphene
- Electron-phonon coupling in suspended graphene: supercollisions by ripples
- Carrier multiplication in graphene under Landau quantization
- Transient absorption and photocurrent microscopy show hot electron supercollisions describe the rate-limiting relaxation step in graphene
- Slow noncollinear Coulomb scattering in the vicinity of the Dirac point in graphene
- Microscopic description of intraband absorption in graphene: the occurrence of transient negative differential transmission
- Emergence of a ZO Kohn anomaly in quasi-freestanding epitaxial graphene
Cited by in corpus (4)
- Pseudo-magnetic field-induced ultra-slow carrier dynamics in periodically strained graphene
- Landau velocity for collective quantum Hall breakdown in bilayer graphene
- Current-induced enhancement of photo-response in graphene THz radiation detectors
- Gate tunable terahertz cyclotron emission from two-dimensional Dirac fermions