Gossamer Superconductivity near Antiferromagnetic Mott Insulator in Layered Organic Conductors

Preprint

18 September 2004

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/0409482

Abstract

Layered organic superconductors are on the verge of the Mott insulator. We use Gutzwiller variational method to study a Hubbard model including a spin exchange coupling term. The ground state is found to be a Gossamer superconductor at small on-site Coulomb repulsion U and an antiferromagnetic Mott insulator at large U, separated by a first order phase transition. Our theory is qualitatively consistent with major experiments reported in organic superconductors.

Keywords

ANTIFERROMAGNETIC MOTT INSULATOR
VARIATIONAL METHOD
SUPERCONDUCTIVITY
PHASE TRANSITION
SUPERCONDUCTORS
MOTT INSULATOR
GOSSAMER

All Related Versions

Version 1, 2004-09-18, ArXiv
Published version: Physical Review Letters, 94 (6), 067005.

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