Quasi-two-dimensional behavior of 112-type iron-based superconductors

Article

关键词: TEMPERATURE SUPERCONDUCTORS;    LAYERED SUPERCONDUCTORS;    CRITICAL FLUCTUATIONS;    II SUPERCONDUCTORS;    FIELD;    PARACONDUCTIVITY;    YBA2CU3O7-DELTA;    TRANSITION;   

DOI  :  10.1103/PhysRevB.96.014516

来源: SCIE

【 摘 要 】

Fluctuation magnetoconductivity and magnetization above the superconducting transition temperature (Tc) are measured on the recently discovered 112 family of iron-based superconductors (IBS), Ca1-xLaxFe1-yNiyAs2, which presents an extra As-As chain spacer-layer. The analysis in terms of a generalization of the LawrenceDoniach approach to finite appliedmagnetic fields indicates that these compounds are among the most anisotropic IBS (gamma up to similar to 30) and provides compelling evidence of a quasi-two-dimensional behavior for doping levels near the optimal one.

【 授权许可】

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