Abstract
The stage ( N ) and temperature dependences of the conduction electron spin resonance (CESR) have been investigated for rubidium and potassium graphite intercalation compounds. The CESR line width ( Δ H ) has a minimum at N =2 and increases with stage number for N ≧3. The temperature dependence of Δ H for higher stage compounds of N ≧3 shows a remarkable increase at lower temperatures below 200 K. These features can not be understood by the ordinary theory, but they might be related to the electronic structure characteristic of higher stage compounds.
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