Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, New Jersey 08854, USA.
Phys Rev Lett. 2010 May 21;104(20):206403. doi: 10.1103/PhysRevLett.104.206403. Epub 2010 May 19.
The Ni1+/Ni2+ states of nickelates have the identical (3d(9)/3d(8)) electronic configuration as Cu2+/Cu3+ in the high temperature superconducting cuprates, and are expected to show interesting properties. An intriguing question is whether mimicking the electronic and structural features of cuprates would also result in superconductivity in nickelates. Here we report experimental evidence for a bulklike magnetic transition in La4Ni3O8 at 105 K. Density functional theory calculations relate the transition to a spin density wave nesting instability of the Fermi surface.
镍酸盐的 Ni1+/Ni2+ 态与高温超导铜酸盐中的 Cu2+/Cu3+ 具有相同的（3d(9)/3d(8)）电子构型，预计会表现出有趣的性质。一个有趣的问题是，是否模仿铜酸盐的电子和结构特征也会导致镍酸盐的超导性。在这里，我们报告了 La4Ni3O8 在 105 K 时出现体磁转变的实验证据。密度泛函理论计算将该转变与费米面的自旋密度波嵌套不稳定性相关联。
