mp-13978/Rb2ThF6/anharm

Harmonic properties

../../_images/fig_bandos_pr15018.png

(a) Phonon dispersion with participation ratio and DOS

../../_images/fig_thermo15017.png

(b) Thermodynamic properties

Grüneisen parameters

../../_images/fig_gru_all6453.png

(a) Grüneisen parameters

../../_images/fig_gruneisen6453.png

(b) Phonon dispersion with Grüneisen parameters

Thermal conductivity

3-phonon (LASSO) — q-mesh: 11x11x19, supercell: 2x2x4

../../_images/fig_kappa12136.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_kappa_vs_grain_size6530.png

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

Phonon lifetime and scattering rates

../../_images/fig_lifetime6387.png

(a) Phonon lifetime due to phonon-phonon scattering

../../_images/fig_scat_rates6386.png

(b) Phonon scattering rates

Cumulative and spectral thermal conductivity

../../_images/fig_cumu_frequency6387.png

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

../../_images/fig_cumu_mfp6386.png

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

Force constants

../../_images/fig_fc214635.png

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

Summary

../../_images/fig_kappa12137.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_times24857.png

(b) Computation time