Thermal fluctuations of a metal atom on a C 60 surface
Thermal fluctuations of a metal atom on a C 60 surface
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C 60 表面金属原子的热波动
DOI：
10.1103/physreva.62.011201
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发表时间：
2000
影响因子：
2.9
通讯作者：
M. Broyer
中科院分区：
文献类型：
--
作者：
P. Dugourd;R. Antoine;D. Rayane;E. Benichou;M. Broyer
通过测量孤立分子的电极化率，观察到了一个Rb原子在富勒烯笼子表面的涨落。用一个非常简单的驰豫统计模型很好地再现了磁化率随温度的演化。确定了这些起伏的关联时间和碱金属原子在表面上运动的激活能{(E}a}=0.02 eV)。
Fluctuations of a rubidium atom on the surface of a fullerene cage have been observed by measuring the electric susceptibility of isolated ${\mathrm{RbC}}_{60}$ molecules. The evolution of the susceptibility with the temperature is perfectly reproduced with a very simple statistical model of relaxation. The correlation time for these fluctuations and the activation energy ${(E}_{a}=0.02$ eV) for the motion of the alkali-metal atom on the ${\mathrm{C}}_{60}$ surface have been determined.