The discovery and research progress of the nickelate superconductors
Danfeng Li
Abstract
<p indent=0mm>The discovery of the nickelate superconductors has motivated the search for new unconventional superconductors, analogous to cuprates and spurred the revolving interest on the mechanism of high-temperature superconductivity, with the focus on the relationship between the crystal structure and the detailed electronic structure. This article briefly reviews the discovery of the nickelate superconductors with the infinite-layer structure, the on-going experimental efforts, and the evolving understanding of the physics on this new superconducting system. It also discusses the open questions regarding (but not limited to) the exploration of a whole family of nickelate superconductors, materials growth issues, physics problems, and immediate research topics/directions in this new field.