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arXiv · 1705.11144

Crystal growth and phase diagram of 112-type iron pnictide superconductor Ca1-yLayFe1-xNixAs2

Tao Xie·Dongliang Gong·Wenliang Zhang·Yanhong Gu·Zita Husges·Dongfeng Chen·Yuntao Liu·Lijie Hao·Siqin Meng·Zhilun Lu·Shiliang Li·Huiqian Luo
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Abstract

We report a systematic crystal growth and characterization of Ca$_{1-y}$La$_{y}$Fe$_{1-x}$Ni$_{x}$As$_{2}$, the newly discovered 112-type iron-based superconductor. After substituting Fe by a small amount of Ni, bulk superconductivity is successfully obtained in high quality single crystals sized up to 6 mm. Resistivity measurements indicate common features for transport properties in this 112-type iron pnictide, suggest strong scattering from chemical dopants. Together with the superconducting transition temperature $T_c$, and the Neel temperature $T_N$ determined by the elastic neutron scattering, we sketch a three-dimensional phase diagram in the combination of both Ni and La dopings.

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Tao Xie, Dongliang Gong, Wenliang Zhang, Yanhong Gu, Zita Husges, Dongfeng Chen, Yuntao Liu, Lijie Hao, Siqin Meng, Zhilun Lu, Shiliang Li, Huiqian Luo. 2017-05-31. Crystal growth and phase diagram of 112-type iron pnictide superconductor Ca1-yLayFe1-xNixAs2. https://doi.org/10.1088/1361-6668%2Faa7994

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