mp-1707-2/BaN6/anharm

Equation of state

../../_images/fig_bm44.png

(a) Equation of state

Harmonic properties

../../_images/fig_bandos_pr209.png

(a) Phonon dispersion with participation ratio and DOS

../../_images/fig_bandos226.png

(b) Phonon dispersion and DOS

../../_images/fig_thermo209.png

(c) Thermodynamic properties

Grüneisen parameters

../../_images/fig_gru_all134.png

(a) Grüneisen parameters

../../_images/fig_gruneisen134.png

(b) Phonon dispersion with Grüneisen parameters

Thermal conductivity

3-phonon (LASSO), supercell 2x3x2 — q-mesh: 13x16x7, supercell: 2x3x2

../../_images/fig_kappa261.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_kappa_vs_grain_size135.png

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

Phonon lifetime and scattering rates

../../_images/fig_lifetime133.png

(a) Phonon lifetime due to phonon-phonon scattering

../../_images/fig_scat_rates132.png

(b) Phonon scattering rates

Cumulative and spectral thermal conductivity

../../_images/fig_cumu_frequency133.png

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

../../_images/fig_cumu_mfp133.png

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

Force constants

../../_images/fig_fc2193.png

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

Summary

../../_images/fig_times347.png

(a) Computation time