ICET–a Python library for constructing and sampling alloy cluster expansions

M Ångqvist, WA Muñoz, JM Rahm… - Advanced Theory …, 2019 - Wiley Online Library
Alloy cluster expansions (CEs) provide an accurate and computationally efficient mapping of
the potential energy surface of multi‐component systems that enables comprehensive …

Substantial oxygen loss and chemical expansion in lithium-rich layered oxides at moderate delithiation

PM Csernica, K McColl, GM Busse, K Lim, DF Rivera… - Nature Materials, 2024 - nature.com
Delithiation of layered oxide electrodes triggers irreversible oxygen loss, one of the primary
degradation modes in lithium-ion batteries. However, the delithiation-dependent …

Efficient calculation of the lattice thermal conductivity by atomistic simulations with ab initio accuracy

J Brorsson, A Hashemi, Z Fan… - Advanced Theory …, 2022 - Wiley Online Library
High‐order force constant expansions can provide accurate representations of the potential
energy surface relevant to vibrational motion. They can be efficiently parametrized using …

Construction and Sampling of Alloy Cluster Expansions—A Tutorial

P Ekborg-Tanner, P Rosander, E Fransson, P Erhart - PRX Energy, 2024 - APS
Crystalline alloys and related mixed systems make up a large family of materials with high
tunability that have been proposed as the solution to a large number of energy-related …

Efficient construction of linear models in materials modeling and applications to force constant expansions

E Fransson, F Eriksson, P Erhart - npj Computational Materials, 2020 - nature.com
Linear models, such as force constant (FC) and cluster expansions, play a key role in
physics and materials science. While they can in principle be parametrized using regression …

Anharmonic phonon renormalization and thermal transport in the type-I clathrate from first principles

M Ohnishi, T Tadano, S Tsuneyuki, J Shiomi - Physical Review B, 2022 - APS
Effects of strong phonon anharmonicity of a type-I clathrate Ba 8 Ga 16 Sn 30 induced by the
quadruple-well potential of guest atoms were investigated. Phonon transport including a …

Polytelluride square planar chain-induced anharmonicity results in ultralow thermal conductivity and high thermoelectric efficiency in Al 2 Te 5 monolayers

I Maleki, SMV Allaei, SS Naghavi - Physical Chemistry Chemical …, 2024 - pubs.rsc.org
Two-dimensional (2D) metal chalcogenides provide rich ground for the development of
nanoscale thermoelectrics, although achieving optimal thermoelectric efficiency is still a …

Robust cluster expansion of multicomponent systems using structured sparsity

Z Leong, TL Tan - Physical Review B, 2019 - APS
Identifying a suitable set of descriptors for modeling physical systems often utilizes either
deep physical insights or statistical methods such as compressed sensing. In statistical …

Effective optimization of atomic decoration in giant and superstructurally ordered crystals with machine learning

FT Cerasoli, D Donadio - The Journal of Chemical Physics, 2024 - pubs.aip.org
Crystals with complicated geometry are often observed with mixed chemical occupancy
among Wyckoff sites, presenting a unique challenge for accurate atomic modeling. Similar …

Understanding chemical ordering in intermetallic clathrates from atomic scale simulations

M Ångqvist, P Erhart - Chemistry of Materials, 2017 - ACS Publications
Intermetallic clathrates exhibit great variability with respect to elemental composition and
distribution. While this provides a lot of flexibility for tuning properties, it also poses a …