Electronic density of states in strongly anisotropic systems in the phase of coexistence of magnetism and superconductivity in an external magnetic field

Abstract

A method for calculating the electronic density of states in the "mixed phase"—superconductivity (SC) and the magnetic state of the spin-density wave (SDW)—is proposed. The main mechanism for the appearance of this phase is considered to be the doping of the system and allowance for the lattice structure (umklapp processes). The effect of an external magnetic field and the possibility of increasing the superconducting transition temperature Tc are analyzed.