mp-754630/BaSrI4/anharm

Harmonic properties

../../_images/fig_bandos_pr3567.png

(a) Phonon dispersion with participation ratio and DOS

../../_images/fig_thermo3567.png

(b) Thermodynamic properties

Grüneisen parameters

../../_images/fig_gru_all1600.png

(a) Grüneisen parameters

../../_images/fig_gruneisen1600.png

(b) Phonon dispersion with Grüneisen parameters

Thermal conductivity

3-phonon (LASSO) — q-mesh: 8x5x7, supercell: 2x1x2

../../_images/fig_kappa3076.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_kappa_vs_grain_size1621.png

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

Phonon lifetime and scattering rates

../../_images/fig_lifetime1590.png

(a) Phonon lifetime due to phonon-phonon scattering

../../_images/fig_scat_rates1589.png

(b) Phonon scattering rates

Cumulative and spectral thermal conductivity

../../_images/fig_cumu_frequency1590.png

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

../../_images/fig_cumu_mfp1590.png

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

Force constants

../../_images/fig_fc23385.png

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

Summary

../../_images/fig_kappa3077.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_times6214.png

(b) Computation time