Asymmetric destruction of the one-third magnetization plateau upon heating is found in the spin-$\frac{1}{2}$ kagome Heisenberg antiferromagnets by using the typical pure quantum state approach. The asymmetry originates from a density of states of low-lying excited states of $N_{\mathrm{s}}$ spin systems with magnetization $(1/3-2/N_{\mathrm{s}})$ that is larger than the density of states of low-lying states with magnetization $(1/3+2/N_{\mathrm{s}})$. The enhanced specific heat and entropy that reflect the larger density of states in the lower-field side of the plateau are detectable in candidate materials of the kagome antiferromagnets. We discuss how the asymmetry originates from the unprecedented preservation of the ice rule around the plateau.

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Kagome量子反铁磁体中三分之一平台的不对称熔化

在自旋中发现了三分之一的磁化高原在加热时的不对称破坏。$\frac{\mathrm{1个}}{2}$通过使用典型的纯量子态方法，实现了Kagome Heisenberg反铁磁体。不对称性源于低激发态的态密度${ñ}_{\mathrm{s}}$ 磁化自旋系统 $（\mathrm{1个}/3-2/{ñ}_{\mathrm{s}}）$ 比磁化低洼状态的状态密度大 $（\mathrm{1个}/3+2/{ñ}_{\mathrm{s}}）$。在kagome反铁磁体的候选材料中可以检测到比热和熵的增强，它们反映了高原低场侧较大的状态密度。我们讨论了不对称性如何起源于高原周围空前的冰规则保存。