Ferro-Orbitally Ordered Stripes in Systems with Alternating Orbital Order

Details Ferro-Orbitally Ordered Stripes in Systems with Alternating Orbital Order Ferro-Orbitally Ordered Stripes in Systems with Alternating Orbital Order

2010-05-19

arxiv.org/abs/1005.3495v1

Phys. Rev. Lett. 104, 206401 (2010)

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.104.206401

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.

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