Gossamer superconductivity near antiferromagnetic Mott insulator in layered organic conductors.
Phys Rev Lett
; 94(6): 067005, 2005 Feb 18.
Article
em En
| MEDLINE
| ID: mdl-15783770
Layered organic superconductors are on the verge of the Mott insulator. We use the Gutzwiller variational method to study a two-dimensional Hubbard model including a spin exchange coupling term as a minimal model for the compounds. 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.
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Base de dados:
MEDLINE
Idioma:
En
Ano de publicação:
2005
Tipo de documento:
Article