mp-1078709/Na2BiAu/anharm

Harmonic properties

../../_images/fig_bandos_pr16891.png

(a) Phonon dispersion with participation ratio and DOS

../../_images/fig_thermo16890.png

(b) Thermodynamic properties

Grüneisen parameters

../../_images/fig_gru_all7391.png

(a) Grüneisen parameters

../../_images/fig_gruneisen7391.png

(b) Phonon dispersion with Grüneisen parameters

Thermal conductivity

3-phonon (LASSO) — q-mesh: 12x12x12, supercell: 2x2x2

../../_images/fig_kappa13942.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_kappa_vs_grain_size7479.png

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

Phonon lifetime and scattering rates

../../_images/fig_lifetime7325.png

(a) Phonon lifetime due to phonon-phonon scattering

../../_images/fig_scat_rates7324.png

(b) Phonon scattering rates

Cumulative and spectral thermal conductivity

../../_images/fig_cumu_frequency7325.png

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

../../_images/fig_cumu_mfp7324.png

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

Force constants

../../_images/fig_fc216445.png

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

Summary

../../_images/fig_kappa13943.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_times27550.png

(b) Computation time