Ferro-orbitally ordered stripes in systems with alternating orbital order

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...

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Bibliographic Details
Published in:Physical review letters 2010-05, Vol.104 (20), p.206401-206401, Article 206401
Main Authors: Wróbel, Piotr, Oleś, Andrzej M
Format: Article
Language:English
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Summary: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 π 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.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.104.206401