论文标题
极度弱相互作用的$ΔS_z= 0 $和$δs_z= 1 $激发和磁化高原中分数量化的证据：CESB
Extremely Weakly Interacting $ΔS_z = 0$ and $ΔS_z = 1$ Excitations and Evidence for Fractional Quantization in a Magnetization Plateau: CeSb
论文作者
论文摘要
在MetAmagnet CESB中，饱和磁化的1/3高原$ m_s $伴随着上上下序列中的旋转的铁磁层状态。我们测量了$ m $，在高原中的特定热量$ c $，其中揭示了两个不同的激发分支。 $ m $衡量的$ΔS_z= 1 $的人共存，$ΔS_z= 0 $激发的人口大得多，以$ c $测量，但对$ m $看不见。 $ΔS_Z= 0 $激发的大密度，它们的能量差距以及与$ΔS_Z= 1 $激发的相互作用，这表明与天体物理暗物质相比。此外，在高原的中间，可以看到$ m（h）$的三个急剧跳跃，其大小为$ 0.15 $％$ m_s $，与下旋转层中每个站点的分数量化一致。
The plateau at 1/3 of the saturation magnetization, $M_s$, in the metamagnet CeSb is accompanied by a state of ferromagnetic layers of spins in an up-up-down sequence. We measured $M$ and the specific heat, $C$, in the plateau, spin wave analyses of which reveal two distinct branches of excitations. Those with $ΔS_z = 1$ as measured by $M$, coexist with a much larger population of $ΔS_z = 0$ excitations measured by $C$ but invisible to $M$. The large density of $ΔS_z = 0$ excitations, their energy gap, and their seeming lack of interaction with $ΔS_z = 1$ excitations suggest an analogy with astrophysical dark matter. Additionally, in the middle of the plateau three sharp jumps in $M(H)$ are seen, the size of which, $0.15 $%$M_s$, is consistent with fractional quantization of magnetization-per-site in the down-spin layers.
