mp-754710/Sr2CaI6/anharm

Harmonic properties

../../_images/fig_bandos_pr3578.png

(a) Phonon dispersion with participation ratio and DOS

../../_images/fig_thermo3578.png

(b) Thermodynamic properties

Grüneisen parameters

../../_images/fig_gru_all1606.png

(a) Grüneisen parameters

../../_images/fig_gruneisen1606.png

(b) Phonon dispersion with Grüneisen parameters

Thermal conductivity

3-phonon (LASSO) — q-mesh: 9x9x10, supercell: 2x2x3

../../_images/fig_kappa3088.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_kappa_vs_grain_size1627.png

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

Phonon lifetime and scattering rates

../../_images/fig_lifetime1596.png

(a) Phonon lifetime due to phonon-phonon scattering

../../_images/fig_scat_rates1595.png

(b) Phonon scattering rates

Cumulative and spectral thermal conductivity

../../_images/fig_cumu_frequency1596.png

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

../../_images/fig_cumu_mfp1596.png

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

Force constants

../../_images/fig_fc23396.png

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

Summary

../../_images/fig_kappa3089.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_times6235.png

(b) Computation time