Spin, Orbital, and Charge Order at the Interface between Correlated Oxides

2008/04/30 by George Jackeli, G. Jackeli, Giniyat Khaliullin +1 · 1 citation
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Electronic and Structural Properties of Oxides #Magnetic and transport properties of perovskites and related materials #cond-mat.str-el

paper · pdf · doi:10.1103/physrevlett.101.216804

published as Phys. Rev. Lett. 101, 216804 (2008) · 4 pages, 5 figures; revised, to appear in Phys. Rev. Lett

arxiv created 2008/11/13 · openalex publication_date 2008/11/20 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The collective behavior of correlated electrons in the VO2 interface layer of the LaVO(3)/SrTiO(3) heterostructure is studied within a quarter-filled t(2g)-orbital Hubbard model on a square lattice. We argue that the ground state is ferromagnetic, driven by the double-exchange mechanism, and is orbitally and charge ordered due to a confined geometry and electron correlations. The orbital and charge density waves open gaps on the entire Fermi surfaces of all orbitals. The theory explains the observed insulating behavior of the p-type interface between LaVO3 and SrTiO3.

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• Signatures of spin-orbital states of t2g2 system in optical conductivity: RVO3 (R=Y and La)

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