Evidence for an alkali-like conduction band in alkali graphite intercalation compounds |
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| Authors: | P Oelhafen P Pfluger E Hauser H-J Güntherodt |
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| Institution: | Institut für Physik, Universität Basel, Basel, Switzerland |
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| Abstract: | The valence bands of pure graphite and several alkali graphite intercalation compounds (AGIC's) were studied by UPS (hv = 21.2 eV). The most significant observation is an intensity peak at the Fermi energy EF in the intecalation compounds. This peak is mainly due to alkali-like s-states. The density of states at EF is enhanced by a factor of 30 compared to pure graphite. The alkali-like conduction bands in the first stage AGIC's are similar to those of pure alkali metals. |
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