Title

Enhancement of superconducting properties in polycrystalline Fe(Se, Te)via a dual coordination effect

RIS ID

135520

Publication Details

Liu, J., Zhang, S., Sang, L., Li, M., Zhao, W., Li, Z., Cheng, Z., Liu, L., Feng, J., Li, C., Zhang, P., Dou, S., Zhou, L. & Wang, X. (2019). Enhancement of superconducting properties in polycrystalline Fe(Se, Te)via a dual coordination effect. Scripta Materialia, 169 19-22.

Abstract

Cl-doped Fe(Se, Te)superconductors were fabricated through a melting method followed by hydrostatic pressure (HP)post treatment. A dual coordination effect has been aroused, viz. the introduction of Cl − ions triggered the nucleation and growth of nanometric point-like secondary phase as extra pinning centers, while HP strengthened the pinning competence of these point defects. As a result, the superconducting phase volume, critical temperature, and critical current density have been improved by 12.2%, 42.3%, and nearly 100 times, respectively, compared with the undoped sample without HP.

Grant Number

ARC/DP17010411, ARC/FT130100778

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