量子自旋液体态是一种具有长程量子纠缠的新奇物态，具有分数化的任意子的激发，是量子物质科学新范式的代表；研究量子自旋液体对理解高温超导体的机理以及量子计算的应用具有重要的意义。
中国科学院物理研究所/北京凝聚态物理国家研究中心极端条件物理重点实验室的石友国研究员和冯子力博士，凝聚态理论与材料计算重点实验室的孟子杨研究员，超导国家重点实验室的李世亮研究员以及日本国立材料科学研究所的衣玮等合作，首次合成了新的量子自旋液体候选材料Cu3Zn(OH)6FCl。该材料具有完美的Kagome结构；同时，母体材料Cu4(OH)6FCl也被成功制备出来，在17 K左右存在反铁磁相变。
以上工作已发表在CPL Express Letters栏目，应编辑部邀请，斯坦福大学Young Lee教授和Jiajia Wen博士为这篇文章作了点评。
A quantum spin liquid (QSL) is an exotic quantum ground state that does not break conventional symmetries and where the spins in the system remain dynamic down to zero temperature. Unlike a trivial paramagnetic state, it features long-range quantum entanglement and supports fractionalized excitations. Since Anderson's seminal proposal in 1973, QSLs have been vigorously studied both theoretically and experimentally. Frustrated magnets have been the most fruitful playground for the QSL research. These are materials with competing exchange interactions, which typically arise from triangle-based lattices, leading to macroscopic classical ground state degeneracy. This type of frustration is a key ingredient in discovering quantum disordered ground states.