Planar phonon anisotropy, and a way to detect local equilibrium temperature in graphene
arXiv:2305.18177 · doi:10.1016/j.apples.2023.100135
Abstract
The effect of inclusion of the planar phonon anisotropy on thermo-electrical behavior of graphene is analyzed. Charge transport is simulated by means of Direct Simulation Monte Carlo technique coupled with numerical solution of the phonon Boltzmann equations based on deterministic methods. The definition of the crystal lattice local equilibrium temperature is investigated as well and the results furnish possible alternative approaches to identify it starting from measurements of electric current density, with relevant experimental advantages, which could help to overcome the present difficulties regarding thermal investigation of graphene. Positive implications are expected for many applications, as the field of electronic devices, which needs a coherent tool for simulation of charge and hot phonon transport; the correct definition of the local equilibrium temperature is in turn fundamental for the study, design and prototyping of cooling mechanisms for graphene-based devices.
References in corpus (14)
- The electronic properties of graphene
- Electronic transport in two dimensional graphene
- Thermal properties of graphene: Fundamentals and applications
- High-accuracy first-principles determination of the structural, vibrational and thermodynamical properties of diamond, graphite, and derivatives
- Kohn Anomalies and Electron-Phonon Interaction in Graphite
- Optical Phonons in Carbon Nanotubes: Kohn Anomalies, Peierls Distortions and Dynamic Effects
- Quantum mechanical prediction of four-phonon scattering rates and reduced thermal conductivity of solids
- Efficient simulation of multidimensional phonon transport using energy-based variance-reduced Monte Carlo formulations
- Electron Transport and Hot Phonons in Carbon Nanotubes
- First Principles Analysis of Electron-Phonon Interaction in Graphene
- Surface Polar Phonon Dominated Electron Transport in Graphene
- A discontinuous Galerkin solver for Boltzmann Poisson systems in nano devices
- Monte Carlo Simulation of Electron Transport in Degenerate Semiconductors
- Hot carrier and hot phonon coupling during ultrafast relaxation of photoexcited electrons in graphene