Enhanced paramagnetic limit of the upper critical magnetic field for superconductors with charge-density waves

The paramagnetic limit H-p of the upper critical magnetic field H-c2 in superconductors with charge-density waves has been derived in the framework of the self-consistent approach. The obtained quantity H-p always exceeds the Clogston-Chandrasekhar value H-p(BCS). Relevant experimental data for inorganic and organic superconductors with H-c2 > H-p(BCS) are analysed and are shown to be in qualitative agreement with the proposed theory.