mp-12558/LiMgAs/anharm

Harmonic properties

../../_images/fig_bandos_pr15662.png

(a) Phonon dispersion with participation ratio and DOS

../../_images/fig_thermo15661.png

(b) Thermodynamic properties

Grüneisen parameters

../../_images/fig_gru_all6777.png

(a) Grüneisen parameters

../../_images/fig_gruneisen6777.png

(b) Phonon dispersion with Grüneisen parameters

Thermal conductivity

3-phonon (LASSO) — q-mesh: 18x18x18, supercell: 2x2x2

../../_images/fig_kappa12765.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_kappa_vs_grain_size6857.png

(b) Peierls lattice thermal conductivity w.r.t grain size

Phonon lifetime and scattering rates

../../_images/fig_lifetime6711.png

(a) Phonon lifetime due to phonon-phonon scattering

../../_images/fig_scat_rates6710.png

(b) Phonon scattering rates

Cumulative and spectral thermal conductivity

../../_images/fig_cumu_frequency6711.png

(a) Spectral and cumulative thermal conductivity w.r.t frequency

../../_images/fig_cumu_mfp6710.png

(b) Spectral and cumulative thermal conductivity w.r.t MFP

Force constants

../../_images/fig_fc215257.png

(a) Force constants w.r.t atomic distance

Summary

../../_images/fig_kappa12766.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_times25839.png

(b) Computation time