A first-principles study on the intrinsic phonon transport of Cu2GeSe3 Hezhu Shao, Hao Zhang, Bo Peng, Xiaojian Tan, Guo-Qiang Liu, Jun Jiang and Haochuan Jiang EPL, 115 2 (2016) 26002 Published online: 18 August 2016 DOI: 10.1209/0295-5075/115/26002