mp-1111952/Cs2AlTlF6/anharm

Harmonic properties

../../_images/fig_bandos_pr16384.png

(a) Phonon dispersion with participation ratio and DOS

../../_images/fig_thermo16383.png

(b) Thermodynamic properties

Grüneisen parameters

../../_images/fig_gru_all7090.png

(a) Grüneisen parameters

../../_images/fig_gruneisen7090.png

(b) Phonon dispersion with Grüneisen parameters

Thermal conductivity

3-phonon — q-mesh: 12x12x12, supercell: 1x1x1

../../_images/fig_kappa13360.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_kappa_vs_grain_size7172.png

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

Phonon lifetime and scattering rates

../../_images/fig_lifetime7024.png

(a) Phonon lifetime due to phonon-phonon scattering

../../_images/fig_scat_rates7023.png

(b) Phonon scattering rates

Cumulative and spectral thermal conductivity

../../_images/fig_cumu_frequency7024.png

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

../../_images/fig_cumu_mfp7023.png

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

Force constants

../../_images/fig_fc3411.png

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

Summary

../../_images/fig_kappa13361.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_times26885.png

(b) Computation time