Evolutions of Competition of Multiple-Spin-Exchange Interactions and Structure in Submonolayer Solid 3He Film Adsorbed on Grafoil
Evolutions of Competition of Multiple-Spin-Exchange Interactions and Structure in Submonolayer Solid 3He Film Adsorbed on Grafoil
复制标题
吸附在 Grafoil 上的亚单层固体 3He 薄膜中多重自旋交换相互作用和结构的竞争演化
DOI：
10.1103/physrevlett.87.185301
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发表时间：
2001
影响因子：
8.6
通讯作者：
T. Takagi
中科院分区：
文献类型：
--
作者：
M. Morishita;T. Takagi
讨论了${}^{3}\ maththrm {He}$亚单层固体吸附在Grafoil上时，随着面密度的增加，吸附结构的演变和多重自旋交换相互作用的竞争。热容指数与正常值（$\ensuremath{-}2$）的差异被认为表示竞争的强度。我们给出了各种讨论来解释密度依赖的竞争，突然变化的交换频率，以及其他观察结果。在此基础上，我们提出了由模拟和可能的零点空位构造的结构相图。
For ${}^{3}\mathrm{He}$ submonolayer solid adsorbed on Grafoil, the evolutions of the adsorption structure and of the competition of multiple-spin-exchange interactions with increasing areal density are discussed. The discrepancy of the heat-capacity exponent from the normal value, $\ensuremath{-}2$, is considered to show the strength of the competition. We give various discussions to explain the density dependence of the competition, the sudden change of the exchange frequency, and other observations. There we propose the structural phase diagram constructed from the simulations and the possible zero-point vacancies.