吸附在石墨上的~ 3 He的4/7固相的邻近性--空穴掺杂密度有序固体中Specific-Heat异常的起源
On Proximity of 4/7 Solid Phase of 3He Adsorbed on Graphite -Origin of Specific-Heat Anomalies in Hole-Doped Density-Ordered Solid-
摘要：
本文从理论上研究了密度为第一层密度的4/7的第二层~ 3 He在石墨上的稳定性，它是一种量子自旋液体。我们构造了一个晶格模型的第二层3 He的密度涨落考虑在第三层一起采用最近发现的路径积分蒙特卡罗模拟的精细配置。当空穴掺杂到4/7固体中时，在平均场近似下，密度有序流体出现。空穴袋的演变提供了一个统一的解释测量掺杂和温度依赖性的比热异常。我们认为，动量空间的分化是理解物理学的关键，并占多尺度的热力学异常的单层和双层3 He系统超出平均场水平。
英文摘要：
We theoretically study the stability of the solidified second-layer 3He at 4/7 of the first-layer density adsorbed on graphite, which exhibits quantum spin liquid. We construct a lattice model for the second-layer 3He by taking account of density fluctuations on the third layer together by employing the refined configuration recently found by path integral Monte Carlo simulations. When holes are doped into the 4/7 solid, within the mean-field approximation, the density-ordered fluid emerges. The evolution of hole pockets offers a unified explanation for the measured doping and temperature dependences of specific-heat anomalies. We argue that differentiation in momentum space is a key to understanding the physics and accounts for multiscale thermodynamic anomalies in the mono- and double-layered 3He systems beyond the mean-field level.
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