论文标题
（高阶）旋转液体中的部分通量订购和热少生金属
Partial flux ordering and thermal Majorana metals in (higher-order) spin liquids
论文作者
论文摘要
在沮丧的量子磁性中，手性自旋液体是量子自旋液体的特别吸引人的子集，其中分数化的部分自由度形成了Chern绝缘子。在这里，我们研究了一个准确的可解决的自旋3/2模型，该模型不仅具有手性自旋液体，还具有具有高阶Parton带拓扑的自旋液体 - 琐碎的带绝缘子，具有无间隙手性手性边缘模式的Chern绝缘子和带有无间隙角模式的二阶拓扑隔热器。以与这些不同状态相关的热力学前体和热相变的重点，我们采用数值精确的量子蒙特卡洛模拟来揭示许多非常规现象。这包括基态阶段的热稳定性，相关$ \ mathbb {z} _2 $ lattice量规场的部分通量排序的出现以及形成在广泛温度范围内延伸的Thermal Majorana金属状态。
In frustrated quantum magnetism, chiral spin liquids are a particularly intriguing subset of quantum spin liquids in which the fractionalized parton degrees of freedom form a Chern insulator. Here we study an exactly solvable spin-3/2 model which harbors not only chiral spin liquids but also spin liquids with higher-order parton band topology -- a trivial band insulator, a Chern insulator with gapless chiral edge modes, and a second-order topological insulator with gapless corner modes. With a focus on the thermodynamic precursors and thermal phase transitions associated with these distinct states, we employ numerically exact quantum Monte Carlo simulations to reveal a number of unconventional phenomena. This includes a heightened thermal stability of the ground state phases, the emergence of a partial flux ordering of the associated $\mathbb{Z}_2$ lattice gauge field, and the formation of a thermal Majorana metal regime extending over a broad temperature range.
