Research output: Contribution to journal › Journal article
|Journal publication date||15/11/1993|
|Journal||Journal of Physics: Condensed Matter|
|Number of pages||16|
We compare the anticrossing of the spin and cyclotron resonances in spin-polarized and non-polarized phases of a two-dimensional electron gas subjected to a strong tilted magnetic field. The spin-orbit coupling splits these resonances into three lines with the gaps between them exactly equal to delta2n+1 = upsilon(so)pF and delta2n = upsilon(so)pF/square-root 2 at odd- and even-integer factors, respectively. The 1/square-root 2 factor difference between the gaps delta2n and delta2n+1 arises from the existence of two collective spin-wave-density modes in the polarized phase of interacting electrons in the system with two filled Landau levels. This allows us to predict a new type of spectral Shubnikov-de Haas oscillations, which indicates the re-entrance of the system into the spin-polarized state.