Effect of Mn substitution on superconductivity in iron selenide (Li, Fe)OHFeSe single crystals<xref rid="cpb_27_7_077405_fn1" ref-type="fn">*</xref> <fn id="cpb_27_7_077405_fn1"> <label>*</label><p>Project supported by the National Key Research and Development Program of China (Grant Nos. 2017YFA0303003 and 2016YFA0300300), the National Natural Science Foundation of China (Grant No. 11574370), and the Strategic Priority Research Program and Key Research Program of Frontier Sciences of the Chinese Academy of Sciences (Grant Nos. QYZDY-SSW-SLH001, QYZDY-SSW-SLH008, and XDB07020100).</p></fn>

Effect of Mn substitution on superconductivity in iron selenide (Li, Fe)OHFeSe single crystals* *

Project supported by the National Key Research and Development Program of China (Grant Nos. 2017YFA0303003 and 2016YFA0300300), the National Natural Science Foundation of China (Grant No. 11574370), and the Strategic Priority Research Program and Key Research Program of Frontier Sciences of the Chinese Academy of Sciences (Grant Nos. QYZDY-SSW-SLH001, QYZDY-SSW-SLH008, and XDB07020100).

Mao Yiyuan^{1, 2, †}, Li Zian^{1, 2, †}, Zhou Huaxue¹, Ma Mingwei^{1, 2}, Chai Ke³, Ni Shunli^{1, 2}, Liu Shaobo^{1, 2}, Tian Jinpeng^{1, 2}, Huang Yulong^{1, 2}, Yuan Jie¹, Zhou Fang^{1, 2}, Li Jianqi^{1, 2}, Jin Kui^{1, 2}, Dong Xiaoli^{1, 2, ‡}, Zhao Zhongxian^{1, 2, §}

(color online) (a) Lattice parameter c and superconducting transition temperature T_c as functions of Mn doping level z. The dashed curves are as a guide to the eye. (b) The positive correlation between the SC transition temperature T_c and lattice parameter c among the Mn-doped and Mn-free (Li, Fe)OHFeSe samples, regardless of the Mn doping level z.