For a 2D Fermi liquid, the de Haas-van Alphen amplitudes are derived from the zero-mode sector of a coadjoint-orbit bosonized action, yielding LK-like low-T behavior and a second harmonic A2 that changes sign at high T.
(6.7): Ωosc(T = 0) = NΦωc 4π [ ∆ (AFS B )]2 , (6.14) which exhibits dHvA oscillations periodic in 1/B with a period of 2π/AFS
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Bosonized theory of de Haas-van Alphen quantum oscillation in Fermi liquids
For a 2D Fermi liquid, the de Haas-van Alphen amplitudes are derived from the zero-mode sector of a coadjoint-orbit bosonized action, yielding LK-like low-T behavior and a second harmonic A2 that changes sign at high T.