TY - JOUR
T1 - Anomalous Dome-like Superconductivity in RE2(Cu1-xNix)5As3O2 (RE = La, Pr, Nd)
AU - Chen, Xu
AU - Guo, Jiangang
AU - Gong, Chunsheng
AU - Cheng, Erjian
AU - Le, Congcong
AU - Liu, Ning
AU - Ying, Tianping
AU - Zhang, Qinghua
AU - Hu, Jiangping
AU - Li, Shiyan
AU - Chen, Xiaolong
N1 - Publisher Copyright:
© 2019 The Author(s)
PY - 2019/4/26
Y1 - 2019/4/26
N2 - A significant manifestation of interplay of superconductivity and charge density wave, spin density wave, or magnetism is a dome-like superconducting critical temperature (Tc)in cuprate, iron-based, and heavy Fermion superconductors. Pesudogap, quantum critical point, and strange metals emerge in different doping ranges. Exploring dome-like Tc in new superconductors is of interest to detect emergent effects. Here we report the superconductivity in a new layered Cu-based compound RE2Cu5As3O2 (RE = La, Pr, Nd), in which the Tc exhibits dome-like variation with a maximum Tc of 2.5, 1.2, and 1.0 K with substitution of Cu by large amount of Ni ions. Simultaneously, the structural parameters like As-As bond length and c/a ratio exhibit unusual variations as the Ni-doping level goes through the optimal value. The robustness of superconductivity, up to 60% of Ni doping, reveals the unexpected impurity effect on inducing and enhancing superconductivity in these novel layered materials.
AB - A significant manifestation of interplay of superconductivity and charge density wave, spin density wave, or magnetism is a dome-like superconducting critical temperature (Tc)in cuprate, iron-based, and heavy Fermion superconductors. Pesudogap, quantum critical point, and strange metals emerge in different doping ranges. Exploring dome-like Tc in new superconductors is of interest to detect emergent effects. Here we report the superconductivity in a new layered Cu-based compound RE2Cu5As3O2 (RE = La, Pr, Nd), in which the Tc exhibits dome-like variation with a maximum Tc of 2.5, 1.2, and 1.0 K with substitution of Cu by large amount of Ni ions. Simultaneously, the structural parameters like As-As bond length and c/a ratio exhibit unusual variations as the Ni-doping level goes through the optimal value. The robustness of superconductivity, up to 60% of Ni doping, reveals the unexpected impurity effect on inducing and enhancing superconductivity in these novel layered materials.
KW - Phase Transitions
KW - Structural Property of Condensed Matter
KW - Superconductivity
UR - http://www.scopus.com/inward/record.url?scp=85066267254&partnerID=8YFLogxK
U2 - 10.1016/j.isci.2019.03.026
DO - 10.1016/j.isci.2019.03.026
M3 - Article
AN - SCOPUS:85066267254
SN - 2589-0042
VL - 14
SP - 171
EP - 179
JO - iScience
JF - iScience
ER -