Electronic-structure–induced reconstruction and magnetic ordering at the LaAlO 3 |SrTiO 3 interface

2008/01/21 by Zhicheng Zhong, Paul J. Kelly · 9 citations
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.mtrl-sci #cond-mat.str-el

paper · pdf · doi:10.1209/0295-5075/84/27001

published as EPL, 84, 27001 (2008)

arxiv created 2008/01/21 · openalex publication_date 2008/09/10 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30

Abstract

Using local density approximation (LDA) calculations we predict GdFeO 3 -like rotation of TiO 6 octahedra at the n -type interface between LaAlO 3 and SrTiO 3 . This results in a narrowing of the Ti d bandwidth by 1/3 so that LDA+ U calculations predict an antiferromagnetic, charge- and spin-ordered ground state for very modest values of U . Recent experimental evidence for magnetic interface ordering may be understood in terms of the close proximity of an antiferromagnetic insulating ground state to a ferromagnetic metallic excited state.

Citations

• Projector augmented-wave method
• From ultrasoft pseudopotentials to the projector augmented-wave method
• Electron-energy-loss spectra and the structural stability of nickel oxide: An LSDA+U study
• Ab initiomolecular dynamics for liquid metals
• Efficient iterative schemes forab initiototal-energy calculations using a plane-wave basis set

Cited by

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• Instability, intermixing and electronic structure at the epitaxial LaAlO 3 / SrTiO 3 ( 001 ) heterojunction
• Interface relaxation and electrostatic charge depletion in the oxide heterostructure LaAlO 3 /SrTiO 3
• Coexistence of magnetic order and two-dimensional superconductivity at LaAlO3/SrTiO3 interfaces
• Emerging magnetism and electronic phase separation at titanate interfaces
• Termination control of electronic phases in oxide thin films and interfaces: LaAlO 3 /SrTiO 3 (001)
• Artificial two-dimensional polar metal at room temperature
• Stability and electronic properties of LaNiO2/SrTiO3 heterostructures