论文标题
Kitaev-Hubbard模型中的量子自旋液相
A quantum spin liquid phase in the Kitaev-Hubbard model
论文作者
论文摘要
量子旋转液体（QSL）状态已在类似Kitaev的材料中进行了深入搜索，例如氧化偶然氧化物$ A_2 $ IRO $ _3 $和$α$ -RUCL $ _3 $。带有键依赖跳跃术语的半填充的基塔夫 - 哈伯德模型用于描述类似基塔夫的材料，该材料是使用最先进的费米尼式投影纠缠态（FPEPS）方法来计算的。我们在Mott绝缘体过渡附近发现了一个QSL阶段，该阶段的一阶过渡向半金属阶段，Hubbard $ U $的减少。我们建议找到QSL的一个有希望的例程是找到在Mott绝缘体过渡附近的虹膜氧化物。
The quantum spin liquid (QSL) state has been searched intensively in Kitaev-like materials, such as the Iridium oxides $A_2$IrO$_3$ and $α$-RuCl$_3$. The half-filled Kitaev-Hubbard model with bond dependent hopping terms is used to describe the Kitaev-like materials, which is calculated using the state-of-the-art fermionic projected entangled pair states (fPEPS) method. We find a QSL phase near the Mott insulator transition, which has a strong first-order transition to the semi-metal phase with the decrease of Hubbard $U$. We suggest that a promising routine to find the QSL is to find the Iridium oxides that are near the Mott insulator transitions.
