Electron-lattice instabilities suppress cuprate-like electronic structures in SrFeO3/SrTiO3 superlattices

James M. Rondinelli, Nicola A. Spaldin

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

Using ab initio density-functional theory we explore the behavior of thin layers of metallic d4 SrFeO3 confined between the d0 dielectric SrTiO3 in a superlattice geometry. We find that the presence of insulating SrTiO3 spacer layers strongly affects the electronic properties of SrFeO3: for single SrFeO3 layers constrained to their bulk cubic structure, the Fermi surface is two dimensional, nested, and resembles that of the hole-doped superconducting cuprates. A Jahn-Teller instability couples to an octahedral tilt mode, however, to remove this degeneracy resulting in insulating superlattices.

Original languageEnglish (US)
Article number085109
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume81
Issue number8
DOIs
StatePublished - Feb 10 2010

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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