Journal Article 4 phonon frequencies HSE0 exchange-correlation functional 2 Research Support, Non-U.S. Gov't 2 phonon dispersion 2 strain energy 2 Helmholtz energy 1 mehr ... MoS2 monolayer 1 MoS2 nanotubes 1 axial point group irreducible representations 1 carbon nanotubes 1 entropy 1 hafnia 1 hafnium disulfide 1 heat capacity 1 line symmetry groups 1 monolayers 1 nanolayers 1 nanotubes 1 single-walled nanotubes 1 thermodynamic functions 1 thermodynamic properties 1 tungsten disulfide 1 vibrational modes 1 zirconium disulfide 1 zone folding 1 weniger ...