Angle-resolved ultraviolet photoemission study of first stage alkali-metal graphite intercalation compounds |
| |
Authors: | N Gunasekara T Takahashi F Maeda T Sagawa H Suematsu |
| |
Institution: | (1) Department of Physics, Tohoku University, 980 Sendai, Japan;(2) Institute of Materials Science, University of Tsukuba, Ibaraki, Japan;(3) Present address: Department of Physics, University of Tokyo, Bunkyo-ku, 113 Tokyo, Japan |
| |
Abstract: | The electronic band structure of the first stage alkali-metal graphite intercalation compounds (C8K, C8Rb and C8Cs) was determined by angle-resolved ultraviolet photoelectron spectroscopy. The dispersive feature of the * bands at
point in the Brillouin zone was clearly observed in all the compounds. The electron occupancies in the * band of C8K, C8Rb and C8Cs were estimated to be 0.5±0.05 e (e; unit electronic charge), 0.45±0.05 e and 0.4±0.05 e, respectively. This strongly suggests that another half of the unit electronic charge is accommodated in the three-dimensional band at point, which forms a spherical Fermi surface at the center of the Brillouin zone. The character of the three-dimensional band at point was also discussed.He died on 27th of September, 1986 |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|