Wigner formulation of thermal transport in solids
Two different heat-transport mechanisms are discussed in solids. In crystals, heat carriers
propagate and scatter particlelike as described by Peierls's formulation of the Boltzmann …
propagate and scatter particlelike as described by Peierls's formulation of the Boltzmann …
Thermal conductivity of glasses: First-principles theory and applications
Predicting the thermal conductivity of glasses from first principles has hitherto been a very
complex problem. The established Allen-Feldman and Green-Kubo approaches employ …
complex problem. The established Allen-Feldman and Green-Kubo approaches employ …
Wavelike tunneling of phonons dominates glassy thermal conductivity in crystalline
Intrinsically low lattice thermal conductivity κ L in halide perovskites is of great interest for
energy conversion applications. Here, based on first-principles calculations, we …
energy conversion applications. Here, based on first-principles calculations, we …
Mechanisms of temperature-dependent thermal transport in amorphous silica from machine-learning molecular dynamics
Amorphous silica (a-SiO 2) is a foundational disordered material for which the thermal
transport properties are important for various applications. To accurately model the …
transport properties are important for various applications. To accurately model the …
Breaking Rayleigh's law with spatially correlated disorder to control phonon transport
Controlling thermal transport in insulators and semiconductors is crucial for many
technological fields such as thermoelectrics and thermal insulation, for which a low thermal …
technological fields such as thermoelectrics and thermal insulation, for which a low thermal …
Crossover from Boltzmann to Wigner thermal transport in thermoelectric skutterudites
Skutterudites are crystals with a cagelike structure that can be augmented with filler atoms
(“rattlers”), usually leading to a reduction in thermal conductivity that can be exploited for …
(“rattlers”), usually leading to a reduction in thermal conductivity that can be exploited for …
From Green-Kubo to the full Boltzmann kinetic approach to heat transport in crystals and glasses
A Fiorentino, S Baroni - Physical Review B, 2023 - APS
We show that vertex corrections to the quasiharmonic Green-Kubo theory of heat transport in
insulators naturally lead to a generalization of the expression for the conductivity that could …
insulators naturally lead to a generalization of the expression for the conductivity that could …
Effect of four-phonon interaction on phonon thermal conductivity and mean-free-path spectrum of high-temperature phase SnSe
The phonon thermal conductivity and mean-free-path (MFP) spectrum of high-temperature
phase SnSe (β-SnSe) are studied using the Boltzmann transport equation and ab initio …
phase SnSe (β-SnSe) are studied using the Boltzmann transport equation and ab initio …
Cu3BiS3: Two‐Dimensional Coordination Induces Out‐of‐Plane Phonon Scattering Enabling Ultralow Thermal Conductivity
The discovery of compounds with low thermal conductivity and the understanding of their
microscopic mechanisms are of great challenges and scientific significance. Herein, we …
microscopic mechanisms are of great challenges and scientific significance. Herein, we …
Thermal Conductivity Predictions with Foundation Atomistic Models
Advances in machine learning have led to the development of foundation models for
atomistic materials chemistry, enabling quantum-accurate descriptions of interatomic forces …
atomistic materials chemistry, enabling quantum-accurate descriptions of interatomic forces …