mp-9722-2/Na2LiGaAs2/anharm

Harmonic properties

../../_images/fig_bandos_pr1206.png

(a) Phonon dispersion with participation ratio and DOS

../../_images/fig_thermo1206.png

(b) Thermodynamic properties

Grüneisen parameters

../../_images/fig_gru_all751.png

(a) Grüneisen parameters

../../_images/fig_gruneisen751.png

(b) Phonon dispersion with Grüneisen parameters

Thermal conductivity

3-phonon (LASSO) — q-mesh: 7x7x12, supercell: 1x1x3

../../_images/fig_kappa1462.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_kappa_vs_grain_size759.png

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

Phonon lifetime and scattering rates

../../_images/fig_lifetime746.png

(a) Phonon lifetime due to phonon-phonon scattering

../../_images/fig_scat_rates745.png

(b) Phonon scattering rates

Cumulative and spectral thermal conductivity

../../_images/fig_cumu_frequency746.png

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

../../_images/fig_cumu_mfp746.png

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

Force constants

../../_images/fig_fc21072.png

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

Summary

../../_images/fig_kappa1463.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_times1808.png

(b) Computation time