mp-568604/KHgC2IN2/anharm

Harmonic properties

../../_images/fig_bandos_pr7305.png

(a) Phonon dispersion with participation ratio and DOS

../../_images/fig_bandos10279.png

(b) Phonon dispersion and DOS

../../_images/fig_thermo7305.png

(c) Thermodynamic properties

Grüneisen parameters

../../_images/fig_gru_all3086.png

(a) Grüneisen parameters

../../_images/fig_gruneisen3086.png

(b) Phonon dispersion with Grüneisen parameters

Thermal conductivity

3-phonon (LASSO) — q-mesh: 10x10x9, supercell: 3x1x1

../../_images/fig_kappa5846.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_kappa_vs_grain_size3128.png

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

Phonon lifetime and scattering rates

../../_images/fig_lifetime3060.png

(a) Phonon lifetime due to phonon-phonon scattering

../../_images/fig_scat_rates3059.png

(b) Phonon scattering rates

Cumulative and spectral thermal conductivity

../../_images/fig_cumu_frequency3060.png

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

../../_images/fig_cumu_mfp3059.png

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

Force constants

../../_images/fig_fc27069.png

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

Summary

../../_images/fig_kappa5847.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_times12959.png

(b) Computation time