mp-380/ZnSe/anharm

Harmonic properties

../../_images/fig_bandos_pr371.png

(a) Phonon dispersion with participation ratio and DOS

../../_images/fig_thermo371.png

(b) Thermodynamic properties

Grüneisen parameters

../../_images/fig_gru_all253.png

(a) Grüneisen parameters

../../_images/fig_gruneisen253.png

(b) Phonon dispersion with Grüneisen parameters

Thermal conductivity

3-phonon (LASSO) — q-mesh: 18x18x11, supercell: 4x4x2

../../_images/fig_kappa498.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_kappa_vs_grain_size256.png

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

Phonon lifetime and scattering rates

../../_images/fig_lifetime252.png

(a) Phonon lifetime due to phonon-phonon scattering

../../_images/fig_scat_rates251.png

(b) Phonon scattering rates

Cumulative and spectral thermal conductivity

../../_images/fig_cumu_frequency252.png

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

../../_images/fig_cumu_mfp252.png

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

Force constants

../../_images/fig_fc2306.png

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

Summary

../../_images/fig_kappa499.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_times592.png

(b) Computation time