mp-757407/Sr2Tl2O5/anharm

Harmonic properties

../../_images/fig_bandos_pr3155.png

(a) Phonon dispersion with participation ratio and DOS

../../_images/fig_thermo3155.png

(b) Thermodynamic properties

Grüneisen parameters

../../_images/fig_gru_all1475.png

(a) Grüneisen parameters

../../_images/fig_gruneisen1475.png

(b) Phonon dispersion with Grüneisen parameters

Thermal conductivity

3-phonon (LASSO) — q-mesh: 12x5x10, supercell: 2x1x2

../../_images/fig_kappa2839.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_kappa_vs_grain_size1491.png

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

Phonon lifetime and scattering rates

../../_images/fig_lifetime1465.png

(a) Phonon lifetime due to phonon-phonon scattering

../../_images/fig_scat_rates1464.png

(b) Phonon scattering rates

Cumulative and spectral thermal conductivity

../../_images/fig_cumu_frequency1465.png

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

../../_images/fig_cumu_mfp1465.png

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

Force constants

../../_images/fig_fc22974.png

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

Summary

../../_images/fig_kappa2840.png

(a) Temperature-dependent lattice thermal conductivity

../../_images/fig_times5458.png

(b) Computation time