Insulator-to-metal transition and large thermoelectric effect in La1−xSrxMnAsOYun-Lei Sun, Jin-Ke Bao, Yong-Kang Luo, Chun-Mu Feng, Zhu-An Xu and Guang-Han CaoEPL, 98 1 (2012) 17009DOI: https://doi.org/10.1209/0295-5075/98/17009