mp-1190476/Na2ZnGe2Se6/anharm

Space group: I4/mcm (140)
Link: Materials Project
Download: mp-1190476.tar.gz

Harmonic properties

../../_images/fig_bandos_pr15988.png — (a) Phonon dispersion with participation ratio and DOS

../../_images/fig_thermo15987.png — (b) Thermodynamic properties

Grüneisen parameters

../../_images/fig_gru_all6936.png — (a) Grüneisen parameters

../../_images/fig_gruneisen6936.png — (b) Phonon dispersion with Grüneisen parameters

Thermal conductivity

3-phonon (LASSO) — q-mesh: 8x8x8, supercell: 1x1x1

../../_images/fig_kappa13060.png — (a) Temperature-dependent lattice thermal conductivity

../../_images/fig_kappa_vs_grain_size7017.png — (b) Peierls lattice thermal conductivity w.r.t grain size

Phonon lifetime and scattering rates

../../_images/fig_lifetime6870.png — (a) Phonon lifetime due to phonon-phonon scattering

../../_images/fig_scat_rates6869.png — (b) Phonon scattering rates

Cumulative and spectral thermal conductivity

../../_images/fig_cumu_frequency6870.png — (a) Spectral and cumulative thermal conductivity w.r.t frequency

../../_images/fig_cumu_mfp6869.png — (b) Spectral and cumulative thermal conductivity w.r.t MFP

Force constants

../../_images/fig_fc215583.png — (a) Force constants w.r.t atomic distance

Summary

../../_images/fig_kappa13061.png — (a) Temperature-dependent lattice thermal conductivity

../../_images/fig_times26327.png — (b) Computation time