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C60单晶价带色散的同步辐射光电子谱研究
SR-ARPES STUDY ON THE VALENCE BAND DISPERSIONS IN SINGLE CRYSTAL C60
【摘要】 测量了C60 单晶 (111)解理面法向发射的角分辨光电子谱 .利用同步辐射光源研究了对应于分子轨道HOMO及HOMO 1的能带的色散关系 .实验观察到HOMO和HOMO 1能带在Γ—L方向存在明显的色散 ,最大色散分别为 0 2 7eV和 0 42eV .色散曲线与理论电子结构基本符合
【Abstract】 Angle\|resolved photoemisson spectra were measured at normal emission on the cleaved (111) surface of C 60 single crystal.Valence band dispersions have been studied with varying photon energy of synchrotron radiation rays from 13.0?eV to 34.0?eV. The largest dispersions are 0.27?eV and 0.42?eV along the Γ—L direction for the HOMO and HOMO\|1 derived bands respectively. The dispersion curves coincide with the theoretical electronic structure fairly well.
【基金】 国家自然科学基金!(批准号 :198740 5 3)资助的课题&&
- 【文献出处】 物理学报 ,ACTA PHYSICA SINICA , 编辑部邮箱 ,2000年06期
- 【分类号】O73
- 【被引频次】3
- 【下载频次】46