Orbital polarons and ferromagnetic insulators in manganites

T. Mizokawa, D. I. Khomskii, G. A. Sawatzky

Research output: Contribution to journalArticle

66 Citations (Scopus)

Abstract

We argue that in lightly hole doped perovskite-type Mn oxides the holes Mn4+ sites) are surrounded by nearest neighbor Mn3+ sites in which the occupied 3d orbitals have their lobes directed towards the central hole (Mn4+) site and with spins coupled ferromagnetically to the central spin. This composite object, which can be viewed as a combined orbital-spin-lattice polaron, is accompanied by the breathing type (Mn3+) and Jahn-Teller type (Mn3+) local lattice distortions. We present calculations which indicate that for certain doping levels these orbital polarons may crystallize into a charge and orbitally ordered ferromagnetic insulating state.

Original languageEnglish
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume63
Issue number2
DOIs
Publication statusPublished - 2001 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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