Ferro-Orbitally Ordered Stripes in Systems with Alternating Orbital Order

Abstract

We establish a novel mechanism of stripe formation in doped systems with alternating $t_{2g}$ orbital order --- the stripe takes the form of a ferro-orbitally ordered domain wall separating domains with staggered order and allowing for deconfined motion of holes along the stripe. At a finite level of hole concentration this gives rise to the stability of this solitonic type of stripes, while we show that the phase change of the staggered order by $\pi$ plays a minor role in orbitally ordered systems. These results shed new light on the physics of doped materials in which orbital degeneracy is present.

5 pages, 4 figures

References in corpus (6)

• Lattice symmetry breaking in cuprate superconductors: Stripes, nematics, and superconductivity
• Spin-orbital frustrations and anomalous metallic state in iron-pnictide superconductors
• Magnetic excitations in a bond-centered stripe phase: Spin waves far from the semi-classical limit
• Absence of Hole Confinement in Transition Metal Oxides with Orbital Degeneracy
• Spectral properties of orbital polarons in Mott insulators
• Striped Multiferroic Phase in Double-Exchange Model for Quarter-Doped Manganites