Orbital polarons and ferromagnetic insulators in manganites

Takashi 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 (Mn4+) 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
Article number024403
Pages (from-to)244031-244035
Number of pages5
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume63
Issue number2
Publication statusPublished - 2001
Externally publishedYes

Fingerprint

Manganites
Gene Conversion
Polarons
polarons
Perovskite
Oxides
Doping (additives)
insulators
orbitals
Composite materials
breathing
lobes
composite materials
oxides
perovskite

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Orbital polarons and ferromagnetic insulators in manganites. / Mizokawa, Takashi; Khomskii, D. I.; Sawatzky, G. A.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 63, No. 2, 024403, 2001, p. 244031-244035.

Research output: Contribution to journalArticle

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