论文标题
手性helimagnetism或Ferromagnetism的出现,由dichalcogenide crnb $ _ {3} $ s $ _ {6}
An emergence of chiral helimagnetism or ferromagnetism governed by Cr intercalation in a dichalcogenide CrNb$_{3}$S$_{6}$
论文作者
论文摘要
手性二分法的单晶合成$ tm_ {3} x_ {6} $($ t $:3 $ d $ d $过渡金属,$ m $:nb或ta,$ x $:s或se)仍然是一个有趣的问题,用于研究诸如Chiriral Helimagnetism之类的新出现量子属性。在这项研究中,我们研究了CR互嵌套$ X $的数量与铬(CR)插入的手性手性二硫化物CR $ _X $ _X $ _x $ _3 $ _3 $ _6 $之间的相关性,以优化用于互层控制的单晶的合成条件。包括磁过渡温度$ t_ {c} $的磁性特性取决于样品。我们系统地生长了Cr $ _ {x} $ nb $ _ {3} $ s $ _ {6} $的单晶,$ x $从0.89到1.03不等,发现Cr Intercalation $ x $的量是控制成年水晶磁性特性的重要因素。磁化异常出现在温度依赖性中,作为手性磁孤子晶格(CSL)形成的证据,仅在0.98至1.03的狭窄区域中观察到。 $ x $的单晶为0.98和0.99显示了CSL的行为,最高$ t_ {c} $ 133K。这些结果表明,$ t $ ions的站点上的少量缺陷极大地影响了单晶在合成中的质量$ tm_ {3} $ s $ s $ s $ _ {6 $ _ {6} $。我们还讨论了综合手性二分法元素的对映映单晶的重要性,以观察手性化合物所特有的手性物理特性,例如磁体手续的效果和手性诱导的自旋选择性。
A synthesis of single crystals of chiral dichalcogenides $TM_{3}X_{6}$ ($T$: 3$d$ transition metal, $M$: Nb or Ta, $X$: S or Se) remains an intriguing issue for the investigation of emergent quantum properties such as chiral helimagnetism. In this study, we investigated a correlation between the quantity of Cr intercalation $x$ and magnetic property in single crystals of a chromium (Cr) intercalated chiral disulfide Cr$_x$Nb$_3$S$_6$ in order to optimize the synthesis condition for the intercalation-controlled single crystals. The magnetic properties including a magnetic transition temperature $T_{c}$ take different values depending on the samples. We systematically grew single crystals of Cr$_{x}$Nb$_{3}$S$_{6}$ with $x$ ranged from 0.89 to 1.03 and found that the amount of the Cr intercalation $x$ is an essential factor in controlling the magnetic properties of the grown crystals. The magnetization anomaly, which appears in the temperature dependence as evidence of the formation of chiral magnetic soliton lattice (CSL), was observed only in a narrow region of $x$ from 0.98 to 1.03. The single crystals with $x$ being 0.98 and 0.99 showed the CSL behavior with the highest $T_{c}$ of 133 K. These results indicate that small amount of defects on the sites for $T$ ions dramatically affects the quality of the single crystals in the synthesis of $TM_{3}$S$_{6}$. We also discuss an importance of synthesizing enantiopure single crystals of chiral dichalgogenides in order to observe chiral physical properties unique to chiral compounds such as magneto-chiral effect and chiral-induced spin selectivity.