mp-559923/NbP2S8/anharm

Harmonic properties

../../_images/fig_bandos_pr7706.png

(a) Phonon dispersion with participation ratio and DOS

../../_images/fig_thermo7706.png

(b) Thermodynamic properties

Grüneisen parameters

../../_images/fig_gru_all3223.png

(a) Grüneisen parameters

../../_images/fig_gruneisen3223.png

(b) Phonon dispersion with Grüneisen parameters

Thermal conductivity

3-phonon (LASSO) — q-mesh: 6x6x7, supercell: 1x1x1

../../_images/fig_kappa6104.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_kappa_vs_grain_size3265.png

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

Phonon lifetime and scattering rates

../../_images/fig_lifetime3195.png

(a) Phonon lifetime due to phonon-phonon scattering

../../_images/fig_scat_rates3194.png

(b) Phonon scattering rates

Cumulative and spectral thermal conductivity

../../_images/fig_cumu_frequency3195.png

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

../../_images/fig_cumu_mfp3194.png

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

Force constants

../../_images/fig_fc27469.png

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

Summary

../../_images/fig_kappa6105.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_times13612.png

(b) Computation time