Low-temperature specific heats of rubidium-graphite intercalation compounds
Motohiro SuganumaDepartment of Crystalline Materials Science, Faculty of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464, JapanTamotsu KondowDepartment of Crystalline Materials Science, Faculty of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464, JapanUichiro MizutaniDepartment of Crystalline Materials Science, Faculty of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464, Japan
1981en
ABI
Annotatsiya
The low-temperature specific heats of graphite-rubidium intercalation compounds were measured using a conventional calorimetric method in the temperature range from 1.5-6 K. The specific heats consisted of the electronic and lattice specific heats as well as a specific-heat anomaly due to a dispersionless optical mode of lattice vibration involving rubidium atoms. The present as well as previous data for graphite-potassium and -cesium compounds can be explained in terms of the heterogeneous charge distribution along the $c$ axis of the compounds.
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