论文标题
阐明Cevo4中有效自旋1/2矩的签名：磁化和热容量研究
Unravelling the signatures of effective spin 1/2 moments in CeVO4: Magnetization and Heat Capacity study
论文作者
论文摘要
在低温下，有效自旋（Jeff）1/2状态的实现为研究某些系统中无序状态背后的令人着迷的物理学提供了一个平台。在这里，我们报告了CEVO4中与Jeff = 1/2相关的磁接地状态的特征。我们的研究证实，在低温区域中没有任何排序或冷冻至1.8 K.，反直流易感性的库里 - 韦斯拟合表明CE3+旋转之间存在抗磁相关性。有效力矩的计算值（〜1.16μ_b）对应于J = 1/2，GJ〜1.20。此外，在2 K处的场依赖性磁化曲线遵循与J = 1/2 Brillouin函数相对应的行为，具有GJ〜1.13。磁场依赖性热容量与两级肖特基方案非常适合。我们的调查表明，CEVO4可以是实现3D自旋系统中Jeff = 1/2属性的有前途的候选人
The realization of an effective spin (Jeff) 1/2 state at low temperatures offers a platform to study the enthralling physics behind the disordered states in certain systems. Here, we report the signatures of magnetic ground state associated with Jeff = 1/2 in CeVO4. Our studies confirm the absence of any ordering or freezing down to 1.8 K. In the low temperature region, the Curie-Weiss fit of the inverse DC susceptibility indicate towards the presence of antiferromagnetic correlations among the Ce3+ spins. The calculated value of effective moment (~1.16 μ_B) corresponds to J = 1/2 with gJ ~ 1.20. Further, the field dependent magnetization curve at 2 K follows a behaviour corresponding to J = 1/2 Brillouin function with gJ ~ 1.13. Magnetic field dependent heat capacity fits very well with two-level Schottky scheme. Our investigations suggest that CeVO4 can be a promising candidate to realise Jeff = 1/2 properties among 3D spin systems
