Stripe orientation in an anisotropic <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>t</mi><mo>−</mo><mi>J</mi></math></span> model

Arno P. Kampf; Douglas J. Scalapino; Steven R. White

doi:10.1103/PhysRevB.64.052509

Stripe orientation in an anisotropic $t - J$ model

Arno P. Kampf, Douglas J. Scalapino, and Steven R. White

Phys. Rev. B 64, 052509 – Published 16 July 2001

Abstract

The tilt pattern of the ${CuO}_{6}$ octahedra in the low-temperature tetragonal (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.