Semimetals

acceptor GIC anisotropy baric coefficients basal plane Brandt Brillouin zone c-axis calculated carbon atoms carbon materials carriers components conductivity corresponding crystallites curves decrease density described determined diamagnetism donor Dresselhaus effect elastic moduli electron spectrum electrons and holes energy spectrum experimental data extremal cross section FeCl3 Fermi energy Fermi level Fermi surface field H force constants frequency function galvanomagnetic graphite intercalation compounds graphite lattice graphite layers heat capacity HOPG impurities in-plane increase interaction intercalate layer irradiation kbar Landau levels magnetic field magnetic susceptibility magnetoresistance magnitude measurements modes natural graphite neighbouring neutron observed obtained optical oscillations parameters peak phonon phonon spectrum Phys pressure properties pure graphite pyrocarbons pyrolytic graphite quantum Raman reactor resonance scattering semimetals shown in fig Solin specimens spectra spectrum of graphite stage index structure superconductivity SWMC-model symmetry Tanuma temperature dependence tensor thermal transitions trigonal warping values vibrations wave vector