mp-734733/Ca19Mg8H54/anharm

Harmonic properties

../../_images/fig_bandos_pr4098.png

(a) Phonon dispersion with participation ratio and DOS

../../_images/fig_thermo4098.png

(b) Thermodynamic properties

Grüneisen parameters

../../_images/fig_gru_all1817.png

(a) Grüneisen parameters

../../_images/fig_gruneisen1817.png

(b) Phonon dispersion with Grüneisen parameters

Thermal conductivity

3-phonon (LASSO) — q-mesh: 7x7x7, supercell: 1x1x1

../../_images/fig_kappa3488.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_kappa_vs_grain_size1845.png

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

Phonon lifetime and scattering rates

../../_images/fig_lifetime1807.png

(a) Phonon lifetime due to phonon-phonon scattering

../../_images/fig_scat_rates1806.png

(b) Phonon scattering rates

Cumulative and spectral thermal conductivity

../../_images/fig_cumu_frequency1807.png

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

../../_images/fig_cumu_mfp1807.png

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

Force constants

../../_images/fig_fc23911.png

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

Summary

../../_images/fig_kappa3489.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_times7139.png

(b) Computation time