mp-23352/GeBi12O20/anharm

Equation of state

../../_images/fig_bm6296.png

(a) Equation of state

Harmonic properties

../../_images/fig_bandos_pr12633.png

(a) Phonon dispersion with participation ratio and DOS

../../_images/fig_bandos17004.png

(b) Phonon dispersion and DOS

../../_images/fig_thermo12633.png

(c) Thermodynamic properties

Grüneisen parameters

../../_images/fig_gru_all5232.png

(a) Grüneisen parameters

../../_images/fig_gruneisen5232.png

(b) Phonon dispersion with Grüneisen parameters

Thermal conductivity

3-phonon (LASSO), supercell 2x2x2 — q-mesh: 8x8x8, supercell: 2x2x2

../../_images/fig_kappa9835.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_kappa_vs_grain_size5294.png

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

Phonon lifetime and scattering rates

../../_images/fig_lifetime5181.png

(a) Phonon lifetime due to phonon-phonon scattering

../../_images/fig_scat_rates5180.png

(b) Phonon scattering rates

Cumulative and spectral thermal conductivity

../../_images/fig_cumu_frequency5181.png

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

../../_images/fig_cumu_mfp5180.png

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

Force constants

../../_images/fig_fc212330.png

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

Summary

../../_images/fig_times21461.png

(a) Computation time