Recently, the need for miniaturization and high integration have steered a strong technical
wave in developing (micro‐) electronic devices. However, excessive amounts of heat may …

Phonon hydrodynamics is an exotic phonon transport phenomenon that challenges the
conventional understanding of diffusive phonon scattering in crystalline solids. It features a …

We propose an ab initio Boltzmann transport approach taking into account magnon-phonon
scattering (MPS) and three-phonon scattering simultaneously to accurately evaluate the …

Second sound refers to the phenomenon of heat propagation as temperature waves in the
phonon hydrodynamic transport regime. We directly observe second sound in graphite at …

Thermal transport in two-dimensional (2D) materials has attracted great attention since the
discovery of high thermal conductivity in graphene, which is closely related to the …

As a crucial signature of hydrodynamic phonon transport, second sound is currently raising
research attention in the field of non-Fourier heat conduction. In this work, through molecular …

Hydrodynamic phonon transport was recently predicted as an important regime for phonon
transport in graphitic materials. Many of the past studies on hydrodynamic phonon transport …

We study hydrodynamic phonon heat transport in two-dimensional (2D) materials. Starting
from the Peierls-Boltzmann equation with the Callaway model approximation, we derive a …

Hydrodynamic phonon transport in solids exhibits unique thermal transport behaviors, such
as second sound, the Poiseuille flow, and ultrahigh thermal conductivity. However, those …

In this work, a lattice Boltzmann scheme is developed for numerical solution of the phonon
Boltzmann equation under Callaway's dual relaxation model in the hydrodynamic limit …