3 He在石墨表面吸附的极小模型是什么？-4/7注册固体中密度波动的重要性-
What is Minimal Model of 3He Adsorbed on Graphite? -Importance of Density Fluctuations in 4/7 Registered Solid -
摘要：
我们从理论上表明，第二层的3 He吸附在石墨上，并固化在第一层密度的4/7是接近的流体-固体边界上的第三层上的大量密度波动。固体显示平移对称性破缺，就像电子系统的电荷有序绝缘体一样。我们构造了一个超越多交换海森堡模型的极小模型。一个意想不到的大磁场所需的测量饱和磁化强度很好地解释了密度波动。量子自旋液体的出现与哈伯德模型和κ-（ET）_2Cu_2（CN）_3在Mott跃迁附近的机制相同。
英文摘要：
We show theoretically that the second layer of 3He adsorbed on graphite and solidified at 4/7 of the first-layer density is close to the fluid-solid boundary with substantial density fluctuations on the third layer. The solid shows a translational symmetry breaking as in charge-ordered insulators of electronic systems. We construct a minimal model beyond the multiple-exchange Heisenberg model. An unexpectedly large magnetic field required for the measured saturation of magnetization is well explained by the density fluctuations. The emergence of quantum spin liquid is understood from the same mechanism as in the Hubbard model and in κ-(ET)_2Cu_2(CN)_3 near the Mott transitions.
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