mp-27975/NdBr3/anharm

Harmonic properties

../../_images/fig_bandos_pr11982.png

(a) Phonon dispersion with participation ratio and DOS

../../_images/fig_thermo11982.png

(b) Thermodynamic properties

Grüneisen parameters

../../_images/fig_gru_all4995.png

(a) Grüneisen parameters

../../_images/fig_gruneisen4995.png

(b) Phonon dispersion with Grüneisen parameters

Thermal conductivity

3-phonon (LASSO) — q-mesh: 12x12x9, supercell: 4x1x2

../../_images/fig_kappa9414.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_kappa_vs_grain_size5054.png

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

Phonon lifetime and scattering rates

../../_images/fig_lifetime4945.png

(a) Phonon lifetime due to phonon-phonon scattering

../../_images/fig_scat_rates4944.png

(b) Phonon scattering rates

Cumulative and spectral thermal conductivity

../../_images/fig_cumu_frequency4945.png

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

../../_images/fig_cumu_mfp4944.png

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

Force constants

../../_images/fig_fc211685.png

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

Summary

../../_images/fig_kappa9415.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_times20321.png

(b) Computation time