mp-560026/Mg5B3O9F/anharm

Harmonic properties

../../_images/fig_bandos_pr7736.png

(a) Phonon dispersion with participation ratio and DOS

../../_images/fig_thermo7736.png

(b) Thermodynamic properties

Grüneisen parameters

../../_images/fig_gru_all3229.png

(a) Grüneisen parameters

../../_images/fig_gruneisen3229.png

(b) Phonon dispersion with Grüneisen parameters

Thermal conductivity

3-phonon (LASSO) — q-mesh: 7x4x15, supercell: 1x1x2

../../_images/fig_kappa6115.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_kappa_vs_grain_size3271.png

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

Phonon lifetime and scattering rates

../../_images/fig_lifetime3201.png

(a) Phonon lifetime due to phonon-phonon scattering

../../_images/fig_scat_rates3200.png

(b) Phonon scattering rates

Cumulative and spectral thermal conductivity

../../_images/fig_cumu_frequency3201.png

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

../../_images/fig_cumu_mfp3200.png

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

Force constants

../../_images/fig_fc27499.png

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

Summary

../../_images/fig_kappa6116.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_times13648.png

(b) Computation time