论文标题
1T-TAS2的量子相和自旋液体特性
Quantum Phases and Spin Liquid Properties of 1T-TaS2
论文作者
论文摘要
表现出磁性挫败感的量子材料与多种现象有关，包括高-TC超导性，拓扑顺序和量子自旋液体（QSL）。 QSL是量子相（QP），与量子键入的液态状态有关。以前的QSL候选材料实验通常是用单个QP来解释的，尽管理论表明许多不同的QP在典型的沮丧的自旋模型中都在紧密竞争。在这里，我们报告了三角晶格QSL候选材料1T-TAS2的组合依赖温度依赖性的隆较旋转弛豫和特定的热量测量值，该材料为竞争QPS提供了证据。测得的属性被分配给1T-TAS2的分层电荷密度波结构内的单个QSL层的阵列，其特征参数可以解释为不同Z2 QSL相的参数。目前的结果表明，QSL描述可以超出最低温度，从而在寻找新型量子材料时提供了新的视角。
Quantum materials exhibiting magnetic frustration are connected to diverse phenomena including high-Tc superconductivity, topological order and quantum spin liquids (QSLs). A QSL is a quantum phase (QP) related to a quantum-entangled fluid-like state of matter. Previous experiments on QSL candidate materials are usually interpreted in terms of a single QP, although theories indicate that many distinct QPs are closely competing in typical frustrated spin models. Here we report on combined temperature-dependent muon spin relaxation and specific heat measurements for the triangular-lattice QSL candidate material 1T-TaS2 that provide evidence for competing QPs. The measured properties are assigned to arrays of individual QSL layers within the layered charge density wave structure of 1T-TaS2 and their characteristic parameters can be interpreted as those of distinct Z2 QSL phases. The present results reveal that a QSL description can extend beyond the lowest temperatures, offering a new perspective in the search for novel quantum materials.
