Superconductivity transition temperature enhancement due to Peierls instability

The superconducting transition temperature ($T_c$) is theoretically shown to rise as a result of the presence of the Peierls instability within a simple incomplete-nesting model in two dimensions. It is demonstrated that $T_c$ can exceed by an order of magnitude that in the absence of the Peierls transition under certain conditions. The implication of this is discussed for the high-$T_c$ superconductors ${\mathrm{La}}_{2\mathrm{-}\mathrm{x}}$ ${\mathrm{M}}_{\mathrm{x}}$ ${\mathrm{CuO}}_4$.