Zelek S. Herman, Robert F. Kirchner, et al.
Inorganic Chemistry
The magnetoreflection technique is applied to study Landau-level transitions in graphite under pressures up to 2 kbar to provide detailed information on the pressure dependence of the graphite electronic structure. In this pressure range the magnetoreflection spectra can be explained in terms of the Slonczewski-Weiss-McClure (SWMcC) band model with small changes in the band parameters that describe the graphite dispersion relations at atmospheric pressure. Using the SWMcC model and neglecting 3, a two-band model is developed to describe the K-point Landau levels and changes in these Landau levels produced by external perturbations. From this analysis a value for ln1p=0.0240.004 (kbar)-1 is determined from the magnetoreflection spectra, in good agreement with recent pressure-dependent optical studies. Information on the pressure dependence of 0 and 4 is also presented. The implications of the present magnetoreflection results on previous pressure-dependent Fermi-surface studies are explored. © 1980 The American Physical Society.
Zelek S. Herman, Robert F. Kirchner, et al.
Inorganic Chemistry
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