Commensurate-incommensurate and rotational transitions of monolayer xenon on single-crystal graphite.
Commensurate-incommensurate and rotational transitions of monolayer xenon on single-crystal graphite.
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单层氙在单晶石墨上的相称-不相称和旋转转变。
DOI：
10.1103/physrevb.36.7311
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发表时间：
1987
期刊：
影响因子：
--
通讯作者：
Suematsu
中科院分区：
文献类型：
--
作者：
Hong;Peters;Mak;Birgeneau;Horn;Suematsu
我们利用高分辨同步辐射X射线衍射技术研究了单晶石墨表面高密度氙单分子膜的结构和跃迁。与之前的X射线实验相反，我们发现在低温下，氙在很宽的覆盖范围内具有相称的$\sqrt{3}\ifmmode\times\else\texttimes\fi{}\sqrt{3} R30\ifmmode ^\circ\else\textdegree\fi {}$结构。随着温度的降低，新的重入序列：对齐\ensuremath{\rightarrow}旋转\ensuremath{\rightarrow}对齐，发生;这个序列之后是一阶的insureate-commonly转变。
We have studied the structures and transitions of high-density xenon monolayers on single-crystal graphite using high-resolution synchrotron x-ray diffraction techniques. In contrast to the previous x-ray experiment, we find that at low temperatures, the xenon has a commensurate $\sqrt{3}\ifmmode\times\else\texttimes\fi{}\sqrt{3}R30\ifmmode^\circ\else\textdegree\fi{}$ structure for a broad range of coverages. With decreasing temperature the novel reentrant sequence: aligned\ensuremath{\rightarrow}rotated\ensuremath{\rightarrow}aligned, occurs; this sequence is followed by a first-order incommensurate-commensurate transition.