Transport measurements indicate strong oscillations in the Hall-,Rxyβ,
and the diagonal-, Rxxβ, resistances and exhibit Hall plateaus at the
lowest temperatures, in three-dimensional Highly Oriented Pyrolytic Graphite
(HOPG). At the same time, a comparative Shubnikov-de Haas-oscillations-based
Berry's phase analysis indicates that graphite is unlike the GaAs/AlGaAs 2D
electron system, the 3D n-GaAs epilayer, semiconducting Hg0.8βCd0.2βTe,
and some other systems. Finally, we observe the transport data to follow
BΓdRxyβ/dBββΞRxxβ. This feature is consistent with
the observed relative phases of the oscillatory Rxxβ and Rxyβ.Comment: 5 pages, 4 figure