物理
蜂巢
量子纠缠
磁性
莫特绝缘子
拓扑绝缘体
格子(音乐)
量子自旋液体
凝聚态物理
理论物理学
量子
量子力学
几何学
自旋极化
电子
数学
声学
作者
Simon Trebst,Ciarán Hickey
标识
DOI:10.1016/j.physrep.2021.11.003
摘要
In transition-metal compounds with partially filled 4d and 5d shells spin–orbit entanglement, electronic correlations, and crystal-field effects conspire to give rise to a variety of novel forms of topological quantum matter. This includes Kitaev materials — a family of spin–orbit assisted Mott insulators, in which local, spin–orbit entangled j=1/2 moments form that are subject to dominant bond-directional Ising exchange interactions. On a conceptual level, Kitaev materials attract much interest for their potential for unconventional forms of magnetism, such as spin liquid physics in two- and three-dimensional lattice geometries or the formation of non-trivial spin textures. Experimentally, a number of Kitaev materials have been synthesized, which includes the honeycomb materials Na2IrO3, α-Li2IrO3, H3LiIr2O6, and, most prominently, α-RuCl3, the triangular materials Ba3IrxTi3−xO9, as well as the three-dimensional hyper-honeycomb and stripy-honeycomb materials β-Li2IrO3 and γ-Li2IrO3. We provide a short review of the current status of the theoretical and experimental exploration of these Kitaev materials.
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