Li Yuesheng, Gegenwart Philipp, Tsirlin Alexander A
Experimental Physics VI, Center for Electronic Correlations and Magnetism, University of Augsburg, 86159 Augsburg, Germany. Wuhan National High Magnetic Field Center and School of Physics, Huazhong University of Science and Technology, 430074 Wuhan, People's Republic of China.
J Phys Condens Matter. 2020 May 20;32(22):224004. doi: 10.1088/1361-648X/ab724e.
The cradle of quantum spin liquids, triangular antiferromagnets show strong proclivity to magnetic order and require deliberate tuning to stabilize a spin-liquid state. In this brief review, we juxtapose recent theoretical developments that trace the parameter regime of the spin-liquid phase, with experimental results for Co-based and Yb-based triangular antiferromagnets. Unconventional spin dynamics arising from both ordered and disordered ground states are discussed, and the notion of a geometrically perfect triangular system is scrutinized to demonstrate non-trivial imperfections that may assist magnetic frustration in stabilizing dynamic spin states with peculiar excitations.
作为量子自旋液体的摇篮，三角反铁磁体强烈倾向于磁有序，需要经过精心调节才能稳定自旋液体状态。在这篇简短的综述中，我们将追踪自旋液体相参数范围的近期理论进展与钴基和镱基三角反铁磁体的实验结果并列呈现。我们讨论了由有序和无序基态产生的非常规自旋动力学，并审视了几何完美三角系统的概念，以证明可能有助于磁阻挫稳定具有奇特激发的动态自旋态的非平凡不完美性。
