mp-541819/Rb2HgB9Se9/anharm

Harmonic properties

../../_images/fig_bandos_pr9568.png

(a) Phonon dispersion with participation ratio and DOS

../../_images/fig_thermo9568.png

(b) Thermodynamic properties

Grüneisen parameters

../../_images/fig_gru_all3820.png

(a) Grüneisen parameters

../../_images/fig_gruneisen3820.png

(b) Phonon dispersion with Grüneisen parameters

Thermal conductivity

3-phonon (LASSO) — q-mesh: 7x7x6, supercell: 2x1x1

../../_images/fig_kappa7204.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_kappa_vs_grain_size3869.png

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

Phonon lifetime and scattering rates

../../_images/fig_lifetime3785.png

(a) Phonon lifetime due to phonon-phonon scattering

../../_images/fig_scat_rates3784.png

(b) Phonon scattering rates

Cumulative and spectral thermal conductivity

../../_images/fig_cumu_frequency3785.png

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

../../_images/fig_cumu_mfp3784.png

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

Force constants

../../_images/fig_fc29329.png

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

Summary

../../_images/fig_kappa7205.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_times16644.png

(b) Computation time