Effect of an interchain bandwidth on Peierls transitions at low temperatures

Abstract

We study the effect that an intercahin bandwidth has on the Peierls transition in quasi-one-dimensional metallic systems within the random-phase approximation. If the transition occurs at temperatures low compared with the interchain bandwidth, we find that the wave vector of the soft mode can be different from ($2k_F,\pi$). We also study the displacement-displacement correlation functions and find a power-law falloff at large distances in the low-temperature region and an exponential falloff for higher temperatures.