Abstract
Using the empirical pseudopotential method, the authors have calculated the Compton profiles and the two-dimensional electron momentum distribution (EMD) for graphite. The calculated Compton profiles as well as their anisotropy are in good agreement with experiments and compare well with other theoretical calculations. Although the anisotropy of the directional Compton profile (one-dimensional EMD) is small, the two-dimensional electron momentum distribution shows a large anisotropy, and a layer structure is found in the two-dimensional EMD integrated over the c axis. It is shown that the layer structure is more clearly exhibited by the two dimensional EMD than by the one-dimensional EMD (Compton profile).
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