Fluctuation Effects on Microphase Separation in Random Copolymers
凝聚态物理
2009-10-22 v1
摘要
We study random copolymers consisted of two kinds of monomers with attraction between similar kinds. The mean field analysis of this system indicates a continuous phase transition into a phase with periodic microdomain structure. It is shown that the inverse of the renormalized propagator has a minimum at non-zero wave-numbers. Consequently, there is an anomalously large contribution of fluctuations that make the disordered phase locally stable at every finite temperature. However, below a certain temperature, the ordered phase is shown to be locally stable and a weak first order transition is possible, similar to the weak crystallization theory developed by Brazovskii.
引用
@article{arxiv.cond-mat/9406067,
title = {Fluctuation Effects on Microphase Separation in Random Copolymers},
author = {A. M. Gutin and C. D. Sfatos and E. I. Shakhnovich},
journal= {arXiv preprint arXiv:cond-mat/9406067},
year = {2009}
}
备注
20 pages, RevTex, includes two uuencoded figures