mp-1102534/POsS/anharm

Harmonic properties

../../_images/fig_bandos_pr16545.png

(a) Phonon dispersion with participation ratio and DOS

../../_images/fig_thermo16544.png

(b) Thermodynamic properties

Grüneisen parameters

../../_images/fig_gru_all7177.png

(a) Grüneisen parameters

../../_images/fig_gruneisen7177.png

(b) Phonon dispersion with Grüneisen parameters

Thermal conductivity

3-phonon (LASSO) — q-mesh: 12x12x12, supercell: 3x2x2

../../_images/fig_kappa13534.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_kappa_vs_grain_size7263.png

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

Phonon lifetime and scattering rates

../../_images/fig_lifetime7111.png

(a) Phonon lifetime due to phonon-phonon scattering

../../_images/fig_scat_rates7110.png

(b) Phonon scattering rates

Cumulative and spectral thermal conductivity

../../_images/fig_cumu_frequency7111.png

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

../../_images/fig_cumu_mfp7110.png

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

Force constants

../../_images/fig_fc216120.png

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

Summary

../../_images/fig_kappa13535.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_times27080.png

(b) Computation time