Wigner formulation of thermal transport in solids

M Simoncelli, N Marzari, F Mauri - Physical Review X, 2022 - APS
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 …

Thermal conductivity of glasses: First-principles theory and applications

M Simoncelli, F Mauri, N Marzari - npj Computational Materials, 2023 - nature.com
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 …

Wavelike tunneling of phonons dominates glassy thermal conductivity in crystalline

J Li, L Wei, Z Ti, L Ma, Y Yan, G Zhang, PF Liu - Physical Review B, 2023 - APS
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 …

Mechanisms of temperature-dependent thermal transport in amorphous silica from machine-learning molecular dynamics

T Liang, P Ying, K Xu, Z Ye, C Ling, Z Fan, J Xu - Physical Review B, 2023 - APS
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 …

Breaking Rayleigh's law with spatially correlated disorder to control phonon transport

S Thébaud, L Lindsay, T Berlijn - Physical Review Letters, 2023 - APS
Controlling thermal transport in insulators and semiconductors is crucial for many
technological fields such as thermoelectrics and thermal insulation, for which a low thermal …

Crossover from Boltzmann to Wigner thermal transport in thermoelectric skutterudites

E Di Lucente, M Simoncelli, N Marzari - Physical Review Research, 2023 - APS
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 …

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 …

Effect of four-phonon interaction on phonon thermal conductivity and mean-free-path spectrum of high-temperature phase SnSe

W Zhou, Y Dai, J Zhang, B Song, TH Liu… - Applied Physics …, 2022 - pubs.aip.org
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 …

Cu3BiS3: Two‐Dimensional Coordination Induces Out‐of‐Plane Phonon Scattering Enabling Ultralow Thermal Conductivity

F Jia, S Zhao, J Wu, L Chen, TH Liu… - Angewandte …, 2023 - Wiley Online Library
The discovery of compounds with low thermal conductivity and the understanding of their
microscopic mechanisms are of great challenges and scientific significance. Herein, we …

Thermal Conductivity Predictions with Foundation Atomistic Models

B Póta, P Ahlawat, G Csányi, M Simoncelli - arXiv preprint arXiv …, 2024 - arxiv.org
Advances in machine learning have led to the development of foundation models for
atomistic materials chemistry, enabling quantum-accurate descriptions of interatomic forces …