Orbital ordering of complex orbitals in doped Mott insulators

Jeroen van den Brink, Daniel Khomskii

Research output: Contribution to journalArticleAcademicpeer-review

76 Citations (Scopus)

Abstract

Orbital ordering, often observed in Mott insulators with orbital degeneracy, is usually supposed to disappear with doping, e.g., in the ferromagnetic metallic phase of manganites. We propose that the orbital ordering of a novel type may exist in such a situation: there may occur an orbital ordering of complex orbitals (linear superposition of basic orbitals 𝑑𝑥2−𝑦2 and 𝑑𝑧2 with complex coefficients). Despite the perfect orbital ordering, such a state still retains cubic symmetry and thus would not induce any structural distortion. This state can resolve many problems in the physics of colossal magnetoresistance manganites and can also exist in other doped Mott insulators with Jahn-Teller ions.
Original languageEnglish
Article number10416
Number of pages5
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume63
Issue numberR
DOIs
Publication statusPublished - 2001

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