Fig. 13.25. Eigenvalue spectrum of C^ in lh symmetry (left) and distorted D5d symmetry (right) together with the irreducible representation labels. Only spin-up orbital levels are shown. Some of the calculated levels remain approximately degenerate and are shown in the figure as degenerate. Dashed lines correspond to unoccupied levels [13.142]. The Fermi level lies in the flu level (left) and in the a2u level (right).
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