Orbital ordering and fluctuation in perovskite titanates

Tomohiko Hatakeyama; Sumio Ishihara; Sadamichi Maekawa

doi:10.1016/S0921-4526(02)02505-X

Orbital ordering and fluctuation in perovskite titanates

Tomohiko Hatakeyama, Sumio Ishihara, Sadamichi Maekawa

SCI - Physics

Research output: Contribution to journal › Article › peer-review

Abstract

We study the orbital ordering and fluctuation in perovskite titanates where the three t_2g orbitals are degenerate at each Ti site. The orbital correlation function is calculated by using the random-phase approximation. It is proposed that the successive phase transition for the orbital ordering occurs. This is caused by the multi-components of the orbital order parameters. The characteristic feature of the momentum dependence of the orbital correlation function near the orbital ordering temperature is expected to be observed by the resonant X-ray scattering.

Original language	English
Pages (from-to)	763-764
Number of pages	2
Journal	Physica B: Condensed Matter
Volume	329-333
Issue number	II
DOIs	https://doi.org/10.1016/S0921-4526(02)02505-X
Publication status	Published - 2003 May

Keywords

Orbital ordering
Phase transition
Strongly correlated electrons
Titanates

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1016/S0921-4526(02)02505-X

Cite this

@article{e2f2f8f0a34f4228826adfa7f5ababc6,

title = "Orbital ordering and fluctuation in perovskite titanates",

abstract = "We study the orbital ordering and fluctuation in perovskite titanates where the three t2g orbitals are degenerate at each Ti site. The orbital correlation function is calculated by using the random-phase approximation. It is proposed that the successive phase transition for the orbital ordering occurs. This is caused by the multi-components of the orbital order parameters. The characteristic feature of the momentum dependence of the orbital correlation function near the orbital ordering temperature is expected to be observed by the resonant X-ray scattering.",

keywords = "Orbital ordering, Phase transition, Strongly correlated electrons, Titanates",

author = "Tomohiko Hatakeyama and Sumio Ishihara and Sadamichi Maekawa",

year = "2003",

month = may,

doi = "10.1016/S0921-4526(02)02505-X",

language = "English",

volume = "329-333",

pages = "763--764",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",

publisher = "Elsevier",

number = "II",

}

TY - JOUR

T1 - Orbital ordering and fluctuation in perovskite titanates

AU - Hatakeyama, Tomohiko

AU - Ishihara, Sumio

AU - Maekawa, Sadamichi

PY - 2003/5

Y1 - 2003/5

N2 - We study the orbital ordering and fluctuation in perovskite titanates where the three t2g orbitals are degenerate at each Ti site. The orbital correlation function is calculated by using the random-phase approximation. It is proposed that the successive phase transition for the orbital ordering occurs. This is caused by the multi-components of the orbital order parameters. The characteristic feature of the momentum dependence of the orbital correlation function near the orbital ordering temperature is expected to be observed by the resonant X-ray scattering.

AB - We study the orbital ordering and fluctuation in perovskite titanates where the three t2g orbitals are degenerate at each Ti site. The orbital correlation function is calculated by using the random-phase approximation. It is proposed that the successive phase transition for the orbital ordering occurs. This is caused by the multi-components of the orbital order parameters. The characteristic feature of the momentum dependence of the orbital correlation function near the orbital ordering temperature is expected to be observed by the resonant X-ray scattering.

KW - Orbital ordering

KW - Phase transition

KW - Strongly correlated electrons

KW - Titanates

UR - http://www.scopus.com/inward/record.url?scp=23044488573&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=23044488573&partnerID=8YFLogxK

U2 - 10.1016/S0921-4526(02)02505-X

DO - 10.1016/S0921-4526(02)02505-X

M3 - Article

AN - SCOPUS:23044488573

SN - 0921-4526

VL - 329-333

SP - 763

EP - 764

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

IS - II

ER -

Orbital ordering and fluctuation in perovskite titanates

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this