标题： 烧绿石氧化物中的金属-绝缘体转变 显示英文标题

标题： Metal-insulator transitions in pyrochlore oxides

摘要： 具有化学式 A₂B₂O₇ 的铁酸盐氧化物作为一类典型的量子材料，展现出多样化的电子性质。这些性质主要源于过渡金属 B 位点上的强电子关联效应以及典型的尖晶石晶格的几何阻挫效应。此外，稀土 A 位点磁矩与 B 位点传导电子之间的耦合，以及特别是影响 B 位点 4d/5d 电子的相对论自旋轨道耦合，导致了关联电子的拓扑特性。本文综述了铁酸盐氧化物中的金属-绝缘体转变，这是强电子关联的证据，并强调了这种关联是令人感兴趣的电荷动力学与受挫自旋轨道纠缠磁性的丰富来源。 显示英文摘要

摘要： Pyrochlore oxides with chemical formula of A2B2O7 exhibit a diverse range of electronic properties as a representative family of quantum materials. These properties mostly stem from strong electron correlations at the transition metal B site and typical geometrical frustration effects on the pyrochlore lattice. Furthermore, the coupling between the magnetic moments of the rare-earth A site and the conduction electrons at the B site, along with the relativistic spin-orbit coupling particularly affecting the 4d/5d electrons at the B site, gives rise to the topological characteristics of the correlated electrons. This review paper focuses on the metal-insulator transitions in pyrochlore oxides as evidence of the strong electron correlation, which is highlighted as a rich source of intriguing charge dynamics coupled with frustrated spin-orbital entangled magnetism.