mp-1011696/Cs2Se/anharm

Space group: Pnma (62)
Link: Materials Project
Download: mp-1011696.tar.gz

Harmonic properties

../../_images/fig_bandos_pr310.png — (a) Phonon dispersion with participation ratio and DOS

../../_images/fig_thermo310.png — (b) Thermodynamic properties

Grüneisen parameters

../../_images/fig_gru_all214.png — (a) Grüneisen parameters

../../_images/fig_gruneisen214.png — (b) Phonon dispersion with Grüneisen parameters

Thermal conductivity

3-phonon (LASSO) — q-mesh: 8x13x6, supercell: 2x3x2

../../_images/fig_kappa420.png — (a) Temperature-dependent lattice thermal conductivity

../../_images/fig_kappa_vs_grain_size217.png — (b) Peierls lattice thermal conductivity w.r.t grain size

Phonon lifetime and scattering rates

../../_images/fig_lifetime213.png — (a) Phonon lifetime due to phonon-phonon scattering

../../_images/fig_scat_rates212.png — (b) Phonon scattering rates

Cumulative and spectral thermal conductivity

../../_images/fig_cumu_frequency213.png — (a) Spectral and cumulative thermal conductivity w.r.t frequency

../../_images/fig_cumu_mfp213.png — (b) Spectral and cumulative thermal conductivity w.r.t MFP

Force constants

../../_images/fig_fc2259.png — (a) Force constants w.r.t atomic distance

Summary

../../_images/fig_kappa421.png — (a) Temperature-dependent lattice thermal conductivity

../../_images/fig_times498.png — (b) Computation time