Antiferromagnetism and superconductivity in a model with extended pairing interactions

摘要: The competition between antiferromagnetism and the d + id superconducting state is studied in a model with near next neighbour interactions absence of any on-site repulsion. A mean field study shows that it possible to have simultaneous occurrence an antiferromagnetic singlet this model. In addition, such coexistence generates triplet order parameter centre mass momentum Q = (π,π) dynamically having same orbital symmetry as superconductor. Inclusion nearest hopping band stabilises dxy away from half filling, topology phase diagram, though, remains similar view very recent observation broad region unconventional states organic superconductors, possibility has been outlined.