mp-1018095/BaGaGeH/anharm

Harmonic properties

../../_images/fig_bandos_pr16.png

(a) Phonon dispersion with participation ratio and DOS

../../_images/fig_thermo16.png

(b) Thermodynamic properties

Grüneisen parameters

../../_images/fig_gru_all12.png

(a) Grüneisen parameters

../../_images/fig_gruneisen12.png

(b) Phonon dispersion with Grüneisen parameters

Thermal conductivity

3-phonon (LASSO) — q-mesh: 17x17x14, supercell: 3x3x3

../../_images/fig_kappa24.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_kappa_vs_grain_size12.png

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

Phonon lifetime and scattering rates

../../_images/fig_lifetime12.png

(a) Phonon lifetime due to phonon-phonon scattering

../../_images/fig_scat_rates12.png

(b) Phonon scattering rates

Cumulative and spectral thermal conductivity

../../_images/fig_cumu_frequency12.png

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

../../_images/fig_cumu_mfp12.png

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

Force constants

../../_images/fig_fc216.png

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

Summary

../../_images/fig_kappa25.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_times34.png

(b) Computation time