Predicting Unconventional High-Temperature Superconductors in Trigonal Bipyramidal Coordinations

• Main Authors: Jiangping Hu, Congcong Le, Xianxin Wu
• Format: Article
• Language: English
• Published: American Physical Society 2015-10-01
• Series: Physical Review X
• Online Access: http://doi.org/10.1103/PhysRevX.5.041012

Cuprates and iron-based superconductors are two classes of unconventional high-T_{c} superconductors based on 3d transition elements. Recently, two principles, the correspondence principle and the magnetic selective pairing rule, have emerged to unify their high-T_{c} superconducting mechanisms. These principles strongly regulate electronic structures that can host high-T_{c} superconductivity. Guided by these principles, here, we propose high-T_{c} superconducting candidates that are formed by cation-anion trigonal bipyramidal complexes with a d^{7} filling configuration on the cation ions. Their superconducting states are expected to be dominated by the d_{xy}±id_{x^{2}−y^{2}} pairing symmetry.