First-principles study on the lattice dynamics and thermodynamic properties of Cu2GeSe3Hezhu Shao, Xiaojian Tan, Tianqi Hu, Guo-Qiang Liu, Jun Jiang and Haochuan JiangEPL, 109 4 (2015) 47004DOI: https://doi.org/10.1209/0295-5075/109/47004