mp-1112165/K2AlCuF6/anharm

Harmonic properties

../../_images/fig_bandos_pr16388.png

(a) Phonon dispersion with participation ratio and DOS

../../_images/fig_thermo16387.png

(b) Thermodynamic properties

Grüneisen parameters

../../_images/fig_gru_all7093.png

(a) Grüneisen parameters

../../_images/fig_gruneisen7093.png

(b) Phonon dispersion with Grüneisen parameters

Thermal conductivity

3-phonon (LASSO) — q-mesh: 14x14x14, supercell: 1x1x1

../../_images/fig_kappa13366.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_kappa_vs_grain_size7175.png

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

Phonon lifetime and scattering rates

../../_images/fig_lifetime7027.png

(a) Phonon lifetime due to phonon-phonon scattering

../../_images/fig_scat_rates7026.png

(b) Phonon scattering rates

Cumulative and spectral thermal conductivity

../../_images/fig_cumu_frequency7027.png

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

../../_images/fig_cumu_mfp7026.png

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

Force constants

../../_images/fig_fc215975.png

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

Summary

../../_images/fig_kappa13367.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_times26889.png

(b) Computation time