mp-1220912/NaPrS2/anharm

Harmonic properties

../../_images/fig_bandos_pr15301.png

(a) Phonon dispersion with participation ratio and DOS

../../_images/fig_thermo15300.png

(b) Thermodynamic properties

Grüneisen parameters

../../_images/fig_gru_all6603.png

(a) Grüneisen parameters

../../_images/fig_gruneisen6603.png

(b) Phonon dispersion with Grüneisen parameters

Thermal conductivity

3-phonon (LASSO) — q-mesh: 15x15x15, supercell: 3x3x1

../../_images/fig_kappa12430.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_kappa_vs_grain_size6681.png

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

Phonon lifetime and scattering rates

../../_images/fig_lifetime6537.png

(a) Phonon lifetime due to phonon-phonon scattering

../../_images/fig_scat_rates6536.png

(b) Phonon scattering rates

Cumulative and spectral thermal conductivity

../../_images/fig_cumu_frequency6537.png

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

../../_images/fig_cumu_mfp6536.png

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

Force constants

../../_images/fig_fc214908.png

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

Summary

../../_images/fig_kappa12431.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_times25320.png

(b) Computation time