Triplet superconductivity in a 1D itinerant electron system with transverse spin anisotropy

Details Triplet superconductivity in a 1D itinerant electron system with transverse spin anisotropy Triplet superconductivity in a 1D itinerant electron system with transverse spin anisotropy

2006-03-20

arxiv.org/abs/cond-mat/0603504v1

Eur. Phys. J. B51, 41 (2006)

Physics

Condensed Matter

Strongly Correlated Electrons

11 pages, 10 figures, accepted for publication in Eur. Phys. J. B

Scientific paper

10.1140/epjb/e2006-00193-x

In this paper we study the ground state phase diagram of a one-dimensional t-J-U model away from half-filling. In the large-bandwidth limit and for ferromagnetic exchange with easy-plane anisotropy a phase with gapless charge and massive spin excitations, characterized by the coexistence of triplet superconducting and spin density wave instabilities is realized in the ground state. With increasing ferromagnetic exchange transitions into a ferrometallic and then a spin gapped triplet superconducting phase take place.

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