论文标题
Cscucl3中的手性四极螺旋螺旋的圆锥形自旋顺序
Conical spin order with chiral quadrupole helix in CsCuCl3
论文作者
论文摘要
在这里，我们报告了在多手持系统CSCUCL3上的Cu L3边缘进行的共鸣X射线衍射（RXD）研究，该研究在手性晶体结构中表现出螺旋磁序。 RXD是一种强大的技术，可以使电子自由度的自由度（电荷），磁偶极子（自旋）和电二极管（轨道）（轨道）（轨道）（轨道）。我们表征了归因于未占用的Cu 3D轨道的Cu周围的电动四极矩，其量化轴不在基础平面上。对磁反射的详细研究揭示了沿着所报道的螺旋结构（即纵向圆锥形（螺旋 - 刺）结构叠加在主轴上的其他正弦调制。平面外调制表明，尽管Cu2+的S = 1/2，但显着的自旋轨道相互作用。
Here we report a resonant x-ray diffraction (RXD) study at the Cu L3 edge on the multi-chiral system CsCuCl3, exhibiting helical magnetic order in a chiral crystal structure. RXD is a powerful technique to disentangle electronic degrees of freedom due to its sensitivity to electric monopoles (charge), magnetic dipoles (spin), and electric quadrupoles (orbital). We characterize electric quadrupole moments around Cu ascribed to the unoccupied Cu 3d orbital, whose quantization axis is off the basal plane. Detailed investigation of magnetic reflections reveals additional sinusoidal modulations along the principal axis superimposed on the reported helical structure, i.e., a longitudinal conical (helical-butterfly) structure. The out-of-plane modulations imply significant spin-orbit interaction despite S = 1/2 of Cu2+.
