We study the effects of weak long-ranged antiferromagnetic interactions of strength Q on a spin model with predominant short-ranged ferromagnetic interactions. In three dimensions, this model exhibits an avoided critical point in the sense that the critical temperature Tc(Q=0) is strictly greater than limQ→0Tc(Q). The behavior of this system at temperatures less than Tc(Q=0) is controlled by the proximity to the avoided critical point. We also quantize the model in a novel way to study the interplay between charge-density wave and superconducting order.
@article{arxiv.cond-mat/9507127,
title = {Avoided Critical Behavior in a Uniformly Frustrated System},
author = {L. Chayes and V. J. Emery and S. A. Kivelson and Z. Nussinov and G. Tarjus},
journal= {arXiv preprint arXiv:cond-mat/9507127},
year = {2015}
}
Comments
32 page Latex file, figures available from authors by request