mp-14532/NaTa3O8/anharm

Harmonic properties

../../_images/fig_bandos_pr14829.png

(a) Phonon dispersion with participation ratio and DOS

../../_images/fig_thermo14829.png

(b) Thermodynamic properties

Grüneisen parameters

../../_images/fig_gru_all6357.png

(a) Grüneisen parameters

../../_images/fig_gruneisen6357.png

(b) Phonon dispersion with Grüneisen parameters

Thermal conductivity

3-phonon (LASSO) — q-mesh: 11x11x11, supercell: 1x1x2

../../_images/fig_kappa11955.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_kappa_vs_grain_size6433.png

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

Phonon lifetime and scattering rates

../../_images/fig_lifetime6292.png

(a) Phonon lifetime due to phonon-phonon scattering

../../_images/fig_scat_rates6291.png

(b) Phonon scattering rates

Cumulative and spectral thermal conductivity

../../_images/fig_cumu_frequency6292.png

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

../../_images/fig_cumu_mfp6291.png

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

Force constants

../../_images/fig_fc214447.png

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

Summary

../../_images/fig_kappa11956.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_times24612.png

(b) Computation time