mp-1104167/CaGa2S4/anharm

Harmonic properties

../../_images/fig_bandos_pr16608.png

(a) Phonon dispersion with participation ratio and DOS

../../_images/fig_thermo16607.png

(b) Thermodynamic properties

Grüneisen parameters

../../_images/fig_gru_all7215.png

(a) Grüneisen parameters

../../_images/fig_gruneisen7215.png

(b) Phonon dispersion with Grüneisen parameters

Thermal conductivity

3-phonon (LASSO) — q-mesh: 12x12x7, supercell: 2x2x1

../../_images/fig_kappa13606.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_kappa_vs_grain_size7301.png

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

Phonon lifetime and scattering rates

../../_images/fig_lifetime7149.png

(a) Phonon lifetime due to phonon-phonon scattering

../../_images/fig_scat_rates7148.png

(b) Phonon scattering rates

Cumulative and spectral thermal conductivity

../../_images/fig_cumu_frequency7149.png

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

../../_images/fig_cumu_mfp7148.png

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

Force constants

../../_images/fig_fc216180.png

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

Summary

../../_images/fig_kappa13607.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_times27161.png

(b) Computation time