论文标题
$α$ -COV $ _ {2} $ o $ $ _ {6} $磁力磁化高原
Metastable and localized Ising magnetism in $α$-CoV$_{2}$O$_{6}$ magnetization plateaus
论文作者
论文摘要
$α$ -COV $ _ {2} $ o $ _ {6} $由$ J _ {\ Mathrm {\ Mathrm {eff}} = {1 \ over 2} $ iSing spins旋转，位于各向异性三角形基序上，在应用领域中具有磁性高原。我们将中子衍射与低温磁化结合在一起，研究这些高原附近的磁性周期性。我们发现这些步骤的特征是在空间上和空间短距离（$ξ\ sim $ 10 $Å$）与反相边界定义$ \ langle \ hat {t}^{2}^{2} \ rangle ＝ = \ \ uparrow \ uparrow \ downarrow $和$ \ langle \ hat {t}^{4} \ rangle = \ \ \ \ \ \ uparrow \ uparrow \ uparrow \ downarrow \ downarrow \ downarrow \ downarrow $或$ \ uparrow \ uparrow \ uparrow \ uparrow \ uparrow \ uparrow \ ustarrow \ ustarrow \ ustarrow \ downarrow \ downarrow $ spinements。这显示了在磁化磁化步骤中存在空间短范围和亚稳态/滞后，相称的磁性的。
$α$-CoV$_{2}$O$_{6}$ consists of $j_{\mathrm{eff}}={1 \over 2}$ Ising spins located on an anisotropic triangular motif with magnetization plateaus in an applied field. We combine neutron diffraction with low temperature magnetization to investigate the magnetic periodicity in the vicinity of these plateaus. We find these steps to be characterized by metastable and spatially short-range ($ξ\sim$ 10 $Å$) magnetic correlations with antiphase boundaries defining a local periodicity of $\langle \hat{T}^{2} \rangle =\ \uparrow \downarrow$ to $\langle \hat{T}^{3} \rangle =\ \uparrow \uparrow \downarrow$, and $\langle \hat{T}^{4} \rangle=\ \uparrow \uparrow \downarrow \downarrow$ or $\uparrow \uparrow \uparrow \downarrow$ spin arrangements. This shows the presence of spatially short range and metastable/hysteretic, commensurate magnetism in Ising magnetization steps.
