Stripe phases - possible ground state of the high-Tc superconductors

Abstract

Based on the mean-field method applied either to the extended single-band Hubbard model or to the single-band Peierls-Hubbard Hamiltonian we study the stability of both site-centered and bond-centered charge domain walls. The difference in energy between these phases is found to be small. Therefore, moderate perturbations to the pure Hubbard model, such as next nearest hopping, lattice anisotropy, or coupling to the lattice, induce phase transitions, shown in the corresponding phase diagrams. In addition, we determine for stable phases charge and magnetization densities, double occupancy, kinetic and magnetic energies, and investigate the role of a finite electron-lattice coupling. We also review experimental signatures of stripes in the superconducting copper oxides.

17 pages, 14 figures

References in corpus (2)

• Asymmetry of the electronic states in hole- and electron-doped cuprates: Exact diagonalization study of the t-t'-t''-J model
• Doping dependence of chemical potential and entropy in hole- and electron-doped high-Tc cuprates

Cited by in corpus (4)

• Lattice symmetry breaking in cuprate superconductors: Stripes, nematics, and superconductivity
• Stripe segregation and magnetic coupling in the nickelate La_5/3 Sr_1/3 NiO_4
• Jahn-Teller mechanism of stripe formation in doped layered La${}_{2-x}$Sr${}_x$NiO${}_4$ nickelates
• Non-resonant Raman response of inhomogeneous structures in the electron doped $t-t^{\prime }$ Hubbard model