Triplet superconductivity vs. easy-plane ferromagnetism in a 1D itinerant electron system with transverse spin anisotropy

Abstract

In this paper we study the ground state phase diagram of a one-dimensional $t-U-J$ model, at 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 reduction of the bandwidth, a transition into an insulating phase showing properties of the spin-1/2 XY model takes place.

11 pages with 15 figures

References in corpus (16)

• Correlated Electrons in High Temperature Superconductors
• Bosonization and Strongly Correlated Systems
• Mott transition, antiferromagnetism, and unconventional superconductivity in layered organic superconductors
• Ferromagnetic spin fluctuation induced superconductivity in Sr_2RuO_4
• Correlations in a two--chain Hubbard model
• Phenomenology of the superconducting state in Sr2RuO4
• Strong Enhancement of Superconducting T_c in Ferromagnetic Phases
• Coexistence of Superconductivity and Spin Density Wave orderings in the organic superconductor (TMTSF)_2PF_6
• First order superconducting transition near a ferromagnetic quantum critical point
• A Model for Superconductivity in Ferromagnetic ZrZn2
• η-superconductivity in the Hubbard chain with pair hopping
• New superconducting phases in field-induced organic superconductor lambda-(BETS)2FeCl4
• Triplet superconductivity in a one-dimensional ferromagnetic t-J model
• Competition of Spin-Fluctuations and Phonons in Superconductivity of ZrZn2
• Coexistence of ferromagnetism and superconductivity
• Phase Transitions in the One-Dimensional Pair-Hopping Model: a Renormalization Group Study

Cited by in corpus (8)

• Some properties of two dimensional extended repulsive Hubbard model with intersite magnetic interactions - a Monte Carlo study
• Superconductivity, metastability and magnetic field induced phase separation in the atomic limit of the Penson-Kolb-Hubbard model
• Triplet superconductivity in a 1D itinerant electron system with transverse spin anisotropy
• Exact solution of the 1D Hubbard model in the atomic limit with inter-site magnetic coupling
• Monte Carlo study of phase separation in magnetic insulators
• Flow Equations for the Ionic Hubbard Model
• Spin and charge orderings in the atomic limit of the U-V-J model
• On the phase diagram of the zero-bandwidth extended Hubbard model with intersite magnetic interactions for strong on-site repulsion limit