论文标题
kitaev候选者$α$ -rucl $ _3 $ rh $^{3+} $掺杂的磁晶格的稀释
Dilution of the magnetic lattice in the Kitaev candidate $α$-RuCl$_3$ by Rh$^{3+}$ doping
论文作者
论文摘要
建立良好的基塔夫候选系统的磁性稀释在替代性ru $ _ {1-x} $ rh $ _x $ cl $ _3 $ _3 $系列（$ x = 0.02-0.6 $）中。优化的合成协议产生均匀掺杂的单晶和多晶粉，这些粉末是父母$α$ -rucl $ _3 $的等值结构，根据X射线衍射。 RH含量$ x $由具有标准标准的定量能量X射线光谱技术准确地确定。我们确定Ru $ _ {1-x} $ RH $ _x $ Cl $ cl $ _3 $的磁相图，用于平面磁场，来自磁化和特定热测量的函数$ x $的函数和堆叠周期性，并确定$ x \ of x Clear for Place freez freez freez的磁性顺序的抑制。与先前关于替代系列ru $ _ {1-x} $ ir $ _x $ cl $ cl $ _3 $的研究相比，我们建议化学压力将有助于抑制磁性顺序格子。我们还发现磁性特性对热循环的略有依赖性，这将是由于结构不完整所致。
Magnetic dilution of a well-established Kitaev candidate system is realized in the substitutional Ru$_{1-x}$Rh$_x$Cl$_3$ series ($x = 0.02-0.6$). Optimized syntheses protocols yield uniformly-doped single crystals and polycrystalline powders that are isostructural to the parental $α$-RuCl$_3$ as per X-ray diffraction. The Rh content $x$ is accurately determined by the quantitative energy-dispersive X-ray spectroscopy technique with standards. We determine the magnetic phase diagram of Ru$_{1-x}$Rh$_x$Cl$_3$ for in-plane magnetic fields from magnetization and specific-heat measurements as a function of $x$ and stacking periodicity, and identify the suppression of the magnetic order at $x \approx 0.2$ towards a disordered phase, which does not show any clear signature of freezing into a spin glass. Comparing with previous studies on the substitution series Ru$_{1-x}$Ir$_x$Cl$_3$, we propose that chemical pressure would contribute to the suppression of magnetic order especially in Ru$_{1-x}$Ir$_x$Cl$_3$ and that the zigzag magnetic ground state appears to be relatively robust with respect to the dilution of the Kitaev--$Γ$--Heisenberg magnetic lattice. We also discovered a slight dependence of the magnetic properties on thermal cycling, which would be due to an incomplete structural transition.
