论文标题
SDW中的磁场引起的重新定位和沮丧的Spin-1/2链化合物$β$ -TEVO $ _4 $的自旋条纹阶段
Magnetic-field-induced reorientation in the SDW and the spin-stripe phases of the frustrated spin-1/2 chain compound $β$-TeVO$_4$
论文作者
论文摘要
$β$ -TEVO $ _4 $是一种沮丧的自旋1/2 Zig-Zag链系统，其中旋转 - 低密度 - 波（SDW），矢量性手性（VC）和一个异国动态动态旋转阶段在低温下竞争。在这里，我们使用扭矩磁力测定法研究这些相的各向异性在高达5 t的磁场中。我们的结果表明，磁场诱导的自旋重新定向发生在SDW和旋转条纹阶段，以$μ_0H \ geQ 2 $ 〜t。观察到的旋转重新定位是$ AC $和$ A^*B $晶体学平面中现场方向的各向异性相图的新元素。提出的结果应有助于建立各向异性磁相互作用的模型，该模型负责在$β$ -TEVO $ _4 $和类似的量子系统中形成复杂的磁相。
$β$-TeVO$_4$ is a frustrated spin 1/2 zig-zag chain system,where spin-density-wave (SDW), vector chiral (VC)and an exotic dynamic spin-stripe phase compete at low temperatures. Here we use torque magnetometry to study the anisotropy of these phases in magnetic fields of up to 5 T. Our results show that the magnetic-field-induced spin reorientation occurs in the SDW and in the spin stripe phases for $μ_0 H \geq 2$~T. The observed spin reorientation is a new element of the anisotropic phase diagram for the field directions in the $ac$ and $a^*b$ crystallographic planes. The presented results should help establishing the model of anisotropic magnetic interactions, which are responsible for the formation of complex magnetic phases in $β$-TeVO$_4$ and similar quantum systems.
