THE DE-HAAS-VAN-ALPHEN EFFECT OF THE STAGE-1 ALCL3 GRAPHITE-INTERCALATION COMPOUND

The de Haas-van Alphen (DHVA) effect of the stage-1 AlCl3 graphite intercalation compound has been studied in the temperature range from 1.5 K to 4.2 K with magnetic fields of 2.5 to 5 T. There is a dominant oscillation with a frequency of 1250 T with the magnetic field parallel to the c axis, which corresponds to an extremal cross sectional Fermi surface area of 0.119 angstrom-2. The charge transfer per C atom is 0.032e+. The cyclotron mass is (0.261+/-0.001) m0. The Fermi energy determined from the Holzwarth band model is -1.14 eV. No beating of the dominant frequency is observed in the 2.5 to 5 T field range, which indicates little undulation of the Fermi surface along the c axis. The Dingle temperature T(D) of one sample is (3.1+/-0.2) K, which corresponds to a mean free path l(D) of (4.8+/-0.4) x 10(3) angstrom.