Stripe orientation in an anisotropic t-J model
arXiv:cond-mat/0102524 · doi:10.1103/PhysRevB.64.052509
Abstract
The tilt pattern of the CuO_6 octahedra in the LTT phase of the cuprate superconductors leads to planar anisotropies for the exchange coupling and hopping integrals. Here, we show that these anisotropies provide a possible structural mechanism for the orientation of stripes. A t_x-t_y-J_x-J_y model thus serves as an effective Hamiltonian to describe stripe formation and orientation in LTT-phase cuprates.
3 pages, 3 figures