Antiferromagnetism and Superconductivity in a model of Quasi 1D Organic Conductors

S. Moukouri

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arXiv · 0706.1364

Antiferromagnetism and Superconductivity in a model of Quasi 1D Organic Conductors

S. Moukouri

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Abstract

I apply a two-step renormalization group method to the study of the competition between antiferromagnetism (AFM) and superconductivity in an anisotropic 2D Hubbard model. I show that this simple model captures the essentials of the ground-state phases of the quasi 1D organic conductors. As found experimentally, the ground-state phase diagram is mostly AFM. The AFM is localized in the strong-coupling limit where the electrons are confined in the chains. It is an SDW in the weak-coupling limit where interchain hopping is present. There is a tiny region in the weak-coupling regime where transverse two-particle hopping is dominant over magnetism.

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S. Moukouri. 2007-06-10. Antiferromagnetism and Superconductivity in a model of Quasi 1D Organic Conductors. https://arxiv.org/abs/0706.1364

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