Help Privacy Policy Disclaimer
  Advanced SearchBrowse




Journal Article

The Unconventional Copper Oxide Superconductor with Conventional Constitution


Hu,  Zhiwei
Zhiwei Hu, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available

Li, W. M., Zhao, J. F., Cao, L. P., Hu, Z., Huang, Q. Z., Wang, X. C., et al. (2020). The Unconventional Copper Oxide Superconductor with Conventional Constitution. Journal of Superconductivity and Novel Magnetism, 33, 81-85. doi:10.1007/s10948-019-05302-6.

Cite as: https://hdl.handle.net/21.11116/0000-0005-5B52-9
A new Ba2CuO4-y superconductor with critical temperature (T-c) exceeding 70 K was discovered. The X-ray absorption measurement gives evidence that this cuprate resembles La2CuO4 but is doped with a fairly large amount of holes, while in contrast to the so far known hole-doped high-T-c cuprates, the new cuprate possesses a much shorter local apical oxygen distance as well as much expanded in-plane Cu-O bond, leading to unprecedented compressed local octahedron. In compressed local octahedron, the Cu3d3z(2)-r(2) orbital level will be lifted above the Cu3dx(2)-y(2) orbital level with more three-dimensional features, implying that pairing symmetry may carry admixtures from more than one gap, suggesting that Ba2CuO4-y composed of alkaline earth copper oxides that are the essential elements to form cuprate superconductors may belong to a new branch of cuprate superconductors.