mp-8402/RbMgF3/anharm

Harmonic properties

../../_images/fig_bandos_pr1810.png

(a) Phonon dispersion with participation ratio and DOS

../../_images/fig_thermo1810.png

(b) Thermodynamic properties

Grüneisen parameters

../../_images/fig_gru_all1026.png

(a) Grüneisen parameters

../../_images/fig_gruneisen1026.png

(b) Phonon dispersion with Grüneisen parameters

Thermal conductivity

3-phonon — q-mesh: 17x17x17, supercell: 3x3x3

../../_images/fig_kappa1985.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_kappa_vs_grain_size1037.png

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

Phonon lifetime and scattering rates

../../_images/fig_lifetime1018.png

(a) Phonon lifetime due to phonon-phonon scattering

../../_images/fig_scat_rates1017.png

(b) Phonon scattering rates

Cumulative and spectral thermal conductivity

../../_images/fig_cumu_frequency1018.png

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

../../_images/fig_cumu_mfp1018.png

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

Force constants

../../_images/fig_fc3173.png

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

Summary

../../_images/fig_kappa1986.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_times2773.png

(b) Computation time