论文标题
可能的Kitaev量子旋转液态在2D材料中，S = 3/2
Possible Kitaev Quantum Spin Liquid State in 2D Materials with S=3/2
论文作者
论文摘要
量子自旋液体（QSL）形成了一种极为不寻常的磁态，其中旋转高度相关，并相干地向下波动至最低温度，但没有对称性破裂，并且没有任何静态的长距离命令磁性的形成。这种有趣的现象不仅具有很大的基本相关性，而且还拥有量子计算和量子信息的希望。在不同类型的QSL中，可以使用大多数提议的候选材料，例如RUCL $ _3 $和Na $ _2 $ iro $ _3 $，具有有效的$ S $ = 1/2旋转值。在这里，通过广泛的基于第一原则的模拟，我们报告了对基于CR的cr缩短的单层（例如Crsite $ _3 $）对Kitaev物理学和可能的Kitaev QSL状态进行的调查，这些单层$ _3 $，而不是拥有$ S $ = 3/2的旋转值。因此，我们的研究将Kitaev物理和QSL的操场扩展到3 $ d $过渡金属化合物。
Quantum spin liquids (QSLs) form an extremely unusual magnetic state in which the spins are highly correlated and fluctuate coherently down to the lowest temperatures, but without symmetry breaking and without the formation of any static long-range-ordered magnetism. Such intriguing phenomena are not only of great fundamental relevance in themselves, but also hold the promise for quantum computing and quantum information. Among different types of QSLs, the exactly solvable Kitaev model is attracting much attention, with most proposed candidate materials, e.g., RuCl$_3$ and Na$_2$IrO$_3$, having an effective $S$=1/2 spin value. Here, via extensive first-principle-based simulations, we report the investigation of the Kitaev physics and possible Kitaev QSL state in epitaxially strained Cr-based monolayers, such as CrSiTe$_3$, that rather possess a $S$=3/2 spin value. Our study thus extends the playground of Kitaev physics and QSLs to 3$d$ transition metal compounds.
