The Landau bands in 2D conductors originate from the lifting up the degeneracy of the Landau orbits on a position by the periodic or disordered potential. In case of a 2D periodic potential the Landau levels split into fractals.
The Fermi contours composed of a periodic chains of closed orbits connected by the magnetic-breakdown points typical for some quasi-2D organic conductors and artificial lateral superlattices.
The magnetic-breakdown factors RMB (p) as a function of the MB probability W for the p = 1, 2, 3, 4, 5. Note that the harmonics integer p exactly equals to the number of zeroth in the polynomial function RMB (p).
The oscillations of the effective MB probability given by Eq. (28).
The damping factor M(W,n) for n = 1, 2, 3, 4, 5 (from top to bottom).
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