论文标题
有效旋转的磁性 - $ \ frac {1} {2} $三角晶格化合物liybs $ _2 $
Magnetic Properties of an Effective Spin-$\frac{1}{2}$ Triangular-Lattice Compound LiYbS$_2$
论文作者
论文摘要
在这里，我们报告了基于YB的三角晶格化合物liybs $ _2 $的合成和磁性。在低温下，由于水晶电场和旋转轨道耦合的综合效果，它具有有效的自旋 - $ \ frac {1} {2} $状态。磁敏感性测量和$^7 $ li核磁共振实验显示，没有磁性远距离排序降至2〜K，这表明可能是量子旋转液态基态。主要的抗铁磁最近的邻居交换交互$ j/k _ {\ rm b} \ simeq $ 5.3〜K可以提取磁化率。 NMR线宽分析得出LI核与Yb $^{3+} $离子之间的耦合常数，该$^{3+} $离子本质上纯粹是偶极。
Here, we report the synthesis and magnetic properties of a Yb-based triangular-lattice compound LiYbS$_2$. At low temperatures, it features an effective spin-$\frac{1}{2}$ state due to the combined effect of crystal electric field and spin orbit coupling. Magnetic susceptibility measurements and $^7$Li nuclear magnetic resonance experiments reveal the absence of magnetic long range ordering down to 2~K, which suggests a possible quantum spin liquid ground state. A dominant antiferromagnetic nearest neighbour exchange interaction $J/k_{\rm B}\simeq$ 5.3~K could be extracted form the magnetic susceptibility. The NMR linewidth analysis yields the coupling constant between the Li nuclei and Yb$^{3+}$ ions which was found to be purely dipolar in nature.
