Theory of magnetic field-Induced charge-density-wave phases

We elaborate an analytical theory of a cascade of magnetic field-induced charge-density-wave (FICDW) phases. It is shown that the following features distinguish it from the well-known spin-density-wave cascade: 1) the FICDW phases exist at temperatures much lower than the characteristic CDW transition temperature at $H=0$; 2) the cascade of the FICDW phases dramatically changes at certain directions of a magnetic field due to an interplay of Zeeman spin-splitting and an electron motion along open Fermi surfaces. Theoretical results are compared with the recent experimental attempts to reveal the FICDW phases in organic conductors $\alpha$-(ET)$_2$MHg(SCN)$_4$ (M = K, Tl, Rb, etc.).