TY - JOUR
T1 - Enhancement of superconducting properties in polycrystalline Fe(Se, Te)via a dual coordination effect
AU - Liu, Jixing
AU - Zhang, Shengnan
AU - Sang, Lina
AU - Li, Meng
AU - Zhao, Weiyao
AU - Li, Zhi
AU - Cheng, Zhenxiang
AU - Liu, Liqiang
AU - Feng, Jianqing
AU - Li, Chengshan
AU - Zhang, Pingxiang
AU - Dou, Shixue
AU - Zhou, Lian
AU - Wang, Xiaolin
N1 - Funding Information:
This research was supported by the International Cooperative Project in Shaanxi Province (No. 2018kw-055 ), ARC Discovery Project ( DP170104116 ), ARC Professorial Future Fellowship Project ( FT130100778 ) and the Taishan Scholars Program of Shandong Province . Jixing Liu is grateful to the China Scholarship Council (CSC) for providing his Ph. D scholarship. Dr. T. Silver's critical reading of this paper is greatly appreciated.
Publisher Copyright:
© 2019
PY - 2019/8
Y1 - 2019/8
N2 - 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.
AB - 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.
KW - Chemical doping
KW - Hydrostatic pressure
KW - Superconductivity
UR - https://www.scopus.com/pages/publications/85065423427
U2 - 10.1016/j.scriptamat.2019.04.029
DO - 10.1016/j.scriptamat.2019.04.029
M3 - Article
AN - SCOPUS:85065423427
SN - 1359-6462
VL - 169
SP - 19
EP - 22
JO - Scripta Materialia
JF - Scripta Materialia
ER -