  We have found the mechanism of the electron Cooper pair formation via the
electron interaction by means of the spin-electron acoustic waves. This
mechanism takes place in metals with rather high spin polarization, like
ferromagnetic, ferrimagnetic and antiferromagnetic materials. The spin-electron
acoustic wave mechanism leads to transition temperatures 100 times higher than
the transition temperature allowed by the electron-phonon interaction.
Therefore, spin-electron acoustic waves give the explanation for the
high-temperature superconductivity. We find that the transition temperature has
strong dependence on the electron concentration and the spin polarization of
the electrons.
