Electronic properties of chloride acceptor graphite intercalation compounds with AuCl3

Abstract

The de Haas-van Alphen (dHvA) effect is reported for the stage-1 and -3 AuCl3 graphite intercalation compounds (GICs). The dHvA frequencies of the stage-3 GIC that are assigned to the graphite bands are 172, 638, and 908 T. There is also a low frequency oscillation of 128 T. The dominant dHvA oscillation for the stage-1 AuCl3 GIC appears at 1471 T and is assigned to the graphite band. There is also a group of oscillations centered at 450 T. A low frequency oscillation in the range 300–600 T has been observed in other acceptor stage-1 GICs. The angular dependence of the low frequency of the stage-1 SbF6−-GIC shows that its corresponding Fermi surface piece has a spherical cross-section for 0 < Θ < 18 °, where Θ is the angle between the c-axis and the magnetic field direction. Comparisons are made to dHvA results of other acceptor GICs.