RT Journal T1 Enhanced Thermoelectric Properties of Cu$_{x}$Se ($1.75 \le x \le 2.10$) during Phase Transitions A1 Zhongmou Yue, Kunpeng Zhao, Hongyi Chen, Pengfei Qiu, Lidong Chen, and Xun Shi PB Chin. Phys. Lett. FD 2021-10-11 YR 2021 JF Chinese Physics Letters JO Chin. Phys. Lett. VO 38 IS 11 SP 117201DO 10.1088/0256-307X/38/11/117201 K1 LK {https://cpl.iphy.ac.cn/EN/article/article_116032.shtml}