mp-680284-2/Rb6Ta4S25/anharm

Equation of state

../../_images/fig_bm2531.png

(a) Equation of state

Harmonic properties

../../_images/fig_bandos_pr5155.png

(a) Phonon dispersion with participation ratio and DOS

../../_images/fig_bandos7352.png

(b) Phonon dispersion and DOS

../../_images/fig_thermo5155.png

(c) Thermodynamic properties

Grüneisen parameters

../../_images/fig_gru_all2156.png

(a) Grüneisen parameters

../../_images/fig_gruneisen2156.png

(b) Phonon dispersion with Grüneisen parameters

Thermal conductivity

3-phonon (LASSO), supercell 1x2x1 — q-mesh: 5x5x7, supercell: 1x2x1

../../_images/fig_kappa4131.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_kappa_vs_grain_size2188.png

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

Phonon lifetime and scattering rates

../../_images/fig_lifetime2143.png

(a) Phonon lifetime due to phonon-phonon scattering

../../_images/fig_scat_rates2142.png

(b) Phonon scattering rates

Cumulative and spectral thermal conductivity

../../_images/fig_cumu_frequency2143.png

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

../../_images/fig_cumu_mfp2143.png

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

Force constants

../../_images/fig_fc24960.png

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

Summary

../../_images/fig_times9268.png

(a) Computation time