We study the Mott transition, antiferromagnetism and superconductivity in layered organic conductors using Cellular Dynamical Mean Field Theory for the frustrated Hubbard model. A d-wave superconducting phase appears between an antiferromagnetic insulator and a metal for t′/t=0.3−0.7, or between a nonmagnetic Mott insulator (spin liquid) and a metal for t′/t≥0.8, in agreement with experiments on layered organic conductors including κ-(ET)2Cu2(CN)3. These phases are separated by a strong first order transition. The phase diagram gives much insight into the mechanism for d-wave superconductivity. Two predictions are made.
@article{arxiv.cond-mat/0604377,
title = {Mott Transition, Antiferromagnetism, and d-wave Superconductivity in Two-Dimensional Organic Conductors},
author = {B. Kyung and A. -M. S. Tremblay},
journal= {arXiv preprint arXiv:cond-mat/0604377},
year = {2009}
}