论文标题
Lieb-Mattis高原在量子自旋链中的实验性实现
Experimental realization of Lieb-Mattis plateau in a quantum spin chain
论文作者
论文摘要
我们提出了一个混合自旋 - （1/2，5/2）链，该链由电荷转移盐（4- br- $ o $ -Mepy-v）FECL $ _4 $组成。我们观察到饱和度直至饱和的整个磁化曲线，该曲线表现出清晰的Lieb-Mattis磁化高原以及随后向无间隙Luttinger液相的量子相变。观察到的磁性行为是通过混合自旋 - （1/2，5/2）链模型定量解释的。目前的结果证明了基于量子拓扑的量子多体效应，并为搜索冷凝物质物理学的拓扑特性提供了新的阶段。
We present a mixed spin-(1/2, 5/2) chain composed of a charge-transfer salt (4-Br-$o$-MePy-V)FeCl$_4$. We observe the entire magnetization curve up to saturation, which exhibits a clear Lieb-Mattis magnetization plateau and subsequent quantum phase transition towards the gapless Luttinger-liquid phase. The observed magnetic behavior is quantitatively explained by a mixed spin-(1/2, 5/2) chain model. The present results demonstrate a quantum many-body effect based on quantum topology and provide a new stage in the search for topological properties in condensed matter physics.
