Interaction of branches of magnetoplasmon spectrum in 2D systems with spin-orbit coupling

We have theoretically investigated magnetoplasma oscillations of a 2D electronic system with spin-orbit interaction (SOI) in the Bychkov-Rashba model. Accounting for SOI results in new branches of magnetoplasmons as compared with the spinless case where the Bernstein modes exist only. A remarkable feature of the problem in question is magnetic field controlled interaction of branches (multiple anticrossings). This is manifested in the spectra of plasmon absorption of electromagnetic radiation.