Figure 1: Electrical resistance as a function of temperature and pressure for Ba0.61K0.39Mn2Bi2.
(a) and (b) Temperature dependent resistance of Ba0.61K0.39Mn2Bi2 at different pressures. (c) Pressure dependence of resistance measured at different temperatures, displaying a dome-like feature centered at ~20–23 GPa. (d) and (e) Blown-up R-T curves at different pressures, showing no evidence of superconductivity.
BaMn2Bi2 possesses an iso-structure of iron pnictide superconductors and similar antiferromagnetic (AFM) ground state to that of cuprates, therefore, it receives much more attention on its properties and is expected to be the parent compound of a new family of superconductors. When doped with potassium (K), BaMn2Bi2 undergoes a transition from an AFM insulator to an AFM metal. Consequently, it is of great interest to suppress the AFM order in the K-doped BaMn2Bi2 with the aim of exploring the potential superconductivity.
Contributors: Dachun Gu, Xia Dai, Congcong Le, Liling Sun, Qi Wu, Bayrammurad Saparov, Jing Guo, Peiwen Gao,Shan Zhang, Yazhou Zhou, Chao Zhang, Shifeng Jin, Lun Xiong, Rui Li, Yanchun Li, Xiaodong Li, Jing Liu, Athena S Sefat, Jiangping Hu, Zhongxian Zhao