Designing Kitaev Spin Liquids in Metal-Organic Frameworks.
Designing Kitaev Spin Liquids in Metal-Organic Frameworks.
复制标题
DOI：
10.1103/physrevlett.119.057202
复制
发表时间：
2016-05
影响因子：
8.6
通讯作者：
M. Yamada;Hiroyuki Fujita;M. Oshikawa
中科院分区：
文献类型：
--
作者：
M. Yamada;Hiroyuki Fujita;M. Oshikawa
基塔耶夫的蜂窝晶格自旋模型是一个非凡的精确可解模型，它以一种特定类型的自旋液体（基塔耶夫自旋液体）作为基态。虽然最近在iridates和α- rucl_{3}中可能实现的讨论很激烈，但这些材料具有大量的非kitaev直接交换相互作用，并且不具有自旋液体基态。我们提出了Ru^{3+}（或Os^{3+}）的金属有机框架（mof），形成蜂窝晶格，作为更理想的实现kitaev型自旋模型的有希望的候选物，其中直接交换相互作用被强烈抑制。mof的巨大灵活性允许推广到其他三维晶格，以实现各种自旋液体，如Weyl自旋液体。
Kitaev's honeycomb lattice spin model is a remarkable exactly solvable model, which has a particular type of spin liquid (Kitaev spin liquid) as the ground state. Although its possible realization in iridates and α-RuCl_{3} has been vigorously discussed recently, these materials have substantial non-Kitaev direct exchange interactions and do not have a spin liquid ground state. We propose metal-organic frameworks (MOFs) with Ru^{3+} (or Os^{3+}), forming the honeycomb lattice as promising candidates for a more ideal realization of Kitaev-type spin models, where the direct exchange interaction is strongly suppressed. The great flexibility of MOFs allows generalization to other three-dimensional lattices for the potential realization of a variety of spin liquids, such as a Weyl spin liquid.