Antiferromagnetism, Stripes, and Superconductivity in the t-J Model with Coulomb Interaction

Abstract

We study mean-field phases of the t-J model with long-range Coulomb interaction. In the order of increasing doping density we find a classical antiferromagnet, charge and spin stripes, and a uniform d-wave superconductor, at the realistic doping parameters. Both in-phase and anti-phase stripes exist as metastable configurations, but the in-phase stripes have a slightly lower energy. The dependence of the stripe width and the inter-stripe spacing on the doping is examined. Effects of fluctuations around the mean-field states are discussed.

References in corpus (6)

• Electronic Liquid Crystal Phases of a Doped Mott Insulator
• Stripe phases in high-temperature superconductors
• Large N expansion for frustrated and doped quantum antiferromagnets
• Nodal Liquid Theory of the Pseudo-Gap Phase of High-Tc Superconductors
• Phase separation at all interaction strengths in the t-J model
• Superconductivity in a doped Mott insulator

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