论文标题
$ s = 1/2 $ kagome antiferromagnet cdcu $ _ {3} $（oh）$ _ {6} $（no $ _ {3} $）
Negative-chirality order in $S=1/2$ kagome antiferromagnet CdCu$_{3}$(OH)$_{6}$(NO$_{3}$)$_{2}\cdot $H$_{2}$O
论文作者
论文摘要
中子衍射和核磁共振（NMR）测量已用于显微镜分析$ s = 1/2 $ kagome抗fiferromagnet cdcu $ _ {3} $ _ {3} $（oh）$ _ {6} $（no $ _ {3} $ _ {3} $ _ _ {2} $ {2} $ n $ _ $ _ $ y cd o.在磁顺序温度下方$ t_n \ simeq 4 $ k，在（110）和（100）的中子衍射模式中发现了磁性bragg反射，这表明$ q = 0 $磁性结构。此外，$ q = 0 $结构的矢量自旋手性从$^{14} $ n-nmr测量获得的内部场方向成功识别。我们的发现指出了手性订购的磁性结构，具有负向量手性，$ \ langle 100 \ rangle $各向异性。
The neutron diffraction and nuclear magnetic resonance (NMR) measurements have been used to microscopically analyze the magnetic structure in the $S = 1/2$ kagome antiferromagnet CdCu$_{3}$(OH)$_{6}$(NO$_{3}$)$_{2}\cdot $H$_{2}$O. Below the magnetic ordering temperature $T_N\simeq 4$ K, magnetic Bragg reflections at (110) and (100) were found in the neutron diffraction pattern, which suggests a $q=0$ magnetic structure. Furthermore, the vector spin chirality for the $q=0$ structure was successfully identified from the internal field direction obtained by the $^{14}$N-NMR measurement. Our findings point to a chirality-ordered magnetic structure with negative vector chirality and $\langle 100 \rangle$ anisotropy.
