论文标题

跟踪从隔离二聚体到多体纠缠的演变,$ _x $ yb $ _ {1-x} $ se $ _2 $

Tracking the evolution from isolated dimers to many-body entanglement in NaLu$_x$Yb$_{1-x}$Se$_2$

论文作者

Cairns, Luke Pritchard, Day, Ryan, Haley, Shannon, Maksimovic, Nikola, Rodriguez, Josue, Taghinejad, Hossein, Singleton, John, Analytis, James G.

论文摘要

我们合成了nalu $ _x $ yb $ _ {1-x} $ se $ _2 $的均质成分,将非磁性naluse $ _2 $连接到三角晶格液体液体候选naybse $ _2 $。当系统从具有稀磁缺陷的系统演变为密集的磁性晶格之一时,研究热特性和磁性性能。磁场和温度依赖的热容量显示了熵交叉从孤立的磁离子到从旋转二聚体带来的相关晶格的携带者。对于稀释系统,我们估计单离子各向异性$(g_ \ perp/g_ \ Parallel = 3.13)$,以及二聚体交换耦合$ j_ \ Parallel(= 5.4 $ 〜K)和$ j_ \ perp(= 9.6 $ 〜K),以便与中度甲板和完整磁性含量相比。

We synthesize homogeneous compositions of NaLu$_x$Yb$_{1-x}$Se$_2$, connecting non-magnetic NaLuSe$_2$ to the triangular lattice spin liquid candidate NaYbSe$_2$. Thermal and magnetic properties are studied as the system evolves from one with dilute magnetic defects to one of a dense magnetic lattice. The field and temperature dependent heat capacity show the carriers of entropy crossover from isolated magnetic ions to a correlated lattice borne from spin dimers. For the dilute system we estimate the single ion anisotropy $(g_\perp/g_\parallel =3.13)$ and also the dimer exchange couplings $J_\parallel(=5.4$~K) and $J_\perp(=9.6$~K), in order to draw comparison to the half-doped and full magnetic compounds.

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