mp-1700/AlN/anharm

Harmonic properties

../../_images/fig_bandos_pr206.png

(a) Phonon dispersion with participation ratio and DOS

../../_images/fig_thermo206.png

(b) Thermodynamic properties

Grüneisen parameters

../../_images/fig_gru_all133.png

(a) Grüneisen parameters

../../_images/fig_gruneisen133.png

(b) Phonon dispersion with Grüneisen parameters

Thermal conductivity

3-phonon (LASSO) — q-mesh: 26x26x26, supercell: 2x2x2

../../_images/fig_kappa259.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_kappa_vs_grain_size134.png

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

Phonon lifetime and scattering rates

../../_images/fig_lifetime132.png

(a) Phonon lifetime due to phonon-phonon scattering

../../_images/fig_scat_rates131.png

(b) Phonon scattering rates

Cumulative and spectral thermal conductivity

../../_images/fig_cumu_frequency132.png

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

../../_images/fig_cumu_mfp132.png

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

Force constants

../../_images/fig_fc2190.png

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

Summary

../../_images/fig_kappa260.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_times343.png

(b) Computation time