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

Xie, Tao; Gong, Dongliang; Zhang, Wenliang; Gu, Yanhong; Huesges, Zita; Chen, Dongfeng; Liu, Yuntao; Hao, Lijie; Meng, Siqin; Lu, Zhilun; Li, Shiliang; Luo, Huiqian

Abstract

We report a systematic crystal growth and characterization of Ca1−yLayFe1−xNixAs2, 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 Tc, and the Néel temperature TN determined by the elastic neutron scattering, we sketch a three-dimensional phase diagram in the combination of both Ni and La dopings.

• Journal Article Type: Article
• Acceptance Date: Jun 14, 2017
• Online Publication Date: Jul 26, 2017
• Publication Date: Sep 1, 2017
• Deposit Date: Oct 23, 2021
• Journal: Superconductor Science and Technology
• Print ISSN: 0953-2048
• Electronic ISSN: 1361-6668
• Publisher: IOP Publishing
• Peer Reviewed: Peer Reviewed
• Volume: 30
• Issue: 9
• Article Number: 095002
• DOI: https://doi.org/10.1088/1361-6668/aa7994
• Public URL: http://researchrepository.napier.ac.uk/Output/2815684