Magic angles effects and rapid magnetic oscillations in organic superconductors

In the framework of the quantum approach to electron-electron (“e-e”)• interactions in a magnetic field, two related phenomena, “magic angles” and “rapid magnetic oscillations”, are investigated. We show that the sharp angular magnetoresistance dips have to exist at the main “magic angles” in Q1D metals due to the unusual dependence of “e-e” — scattering on the direction of the magnetic field. We suggest that “rapid magnetic oscillations” are the result of the influence of a magnetic breakdown on “e-e”-scattering. Our calculations are in qualitative agreement with experimental data.