Low temperature Pmmm and C2/m phases in Sr2CuO3+δ high temperature superconductor

Low temperature Pmmm and C2/m phases in Sr₂CuO_3+δ high temperature superconductor

Wang Hai-Bo¹, Luo Zhen-Lin^{2, ‡}, Yang Yuan-Jun², Liu Qing-Qing³, Hu Si-Xia², Yang Meng-Meng², Jin Chang-Qing³, Gao Chen^{2, 4, †}

(a) A sketch of Sr₂CuO_3+δ unit cell in space group I4/mmm. This was used as the average structure in the following structural refinement. (b) Temperature dependence of the DC magnetic susceptibility in both the zero-field-cooling and field-cooling modes for Sr₂CuO_3+δ, revealing the superconducting transition with T_c∼95 K. (Ref. [18] copyright).