2D ferromagnetic fluctuation above TN in orbital-ordered LaMnO3

C. T. Chen, H. H. Wu, B. N. Lin, Y. Y. Hsu, H. C. Ku

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Onset of two-dimensional (2D) ferromagnetic (FM) short-range order with T2D≃150 K above A-type antiferromagnetic (AF) Néel temperature TN = 139 K was observed in 100 G low field for orbital-ordered LaMnO3. The A-type AF long-range order is stabilized through strong 2D basal plane FM superexchange coupling of orbital-ordered eg electrons and weak c-axis AF coupling. Both T2D and TN are field dependent, and merge in 1 T high field around 130 K. Mn K-edge X-ray absorption near-edge spectrum for orbital-ordered LaMnO 3 at room temperature indicates a pre-edge splitting of 2.0 eV due to weakly allowed 1s-3d dipole transition.

Original languageEnglish
Pages (from-to)829-830
Number of pages2
JournalPhysica B: Condensed Matter
Volume329-333
Issue numberII
DOIs
Publication statusPublished - 2003 May

Fingerprint

orbitals
X ray absorption
Temperature
Electrons
dipoles
room temperature
electrons
x rays
temperature

Keywords

  • 2D FM short range fluctuation
  • A-type AF order
  • Orbital order

ASJC Scopus subject areas

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

Cite this

2D ferromagnetic fluctuation above TN in orbital-ordered LaMnO3. / Chen, C. T.; Wu, H. H.; Lin, B. N.; Hsu, Y. Y.; Ku, H. C.

In: Physica B: Condensed Matter, Vol. 329-333, No. II, 05.2003, p. 829-830.

Research output: Contribution to journalArticle

Chen, C. T. ; Wu, H. H. ; Lin, B. N. ; Hsu, Y. Y. ; Ku, H. C. / 2D ferromagnetic fluctuation above TN in orbital-ordered LaMnO3. In: Physica B: Condensed Matter. 2003 ; Vol. 329-333, No. II. pp. 829-830.
@article{cb6dca6926004a5694b1384c72243779,
title = "2D ferromagnetic fluctuation above TN in orbital-ordered LaMnO3",
abstract = "Onset of two-dimensional (2D) ferromagnetic (FM) short-range order with T2D≃150 K above A-type antiferromagnetic (AF) N{\'e}el temperature TN = 139 K was observed in 100 G low field for orbital-ordered LaMnO3. The A-type AF long-range order is stabilized through strong 2D basal plane FM superexchange coupling of orbital-ordered eg electrons and weak c-axis AF coupling. Both T2D and TN are field dependent, and merge in 1 T high field around 130 K. Mn K-edge X-ray absorption near-edge spectrum for orbital-ordered LaMnO 3 at room temperature indicates a pre-edge splitting of 2.0 eV due to weakly allowed 1s-3d dipole transition.",
keywords = "2D FM short range fluctuation, A-type AF order, Orbital order",
author = "Chen, {C. T.} and Wu, {H. H.} and Lin, {B. N.} and Hsu, {Y. Y.} and Ku, {H. C.}",
year = "2003",
month = "5",
doi = "10.1016/S0921-4526(02)02596-6",
language = "English",
volume = "329-333",
pages = "829--830",
journal = "Physica B: Condensed Matter",
issn = "0921-4526",
publisher = "Elsevier",
number = "II",

}

TY - JOUR

T1 - 2D ferromagnetic fluctuation above TN in orbital-ordered LaMnO3

AU - Chen, C. T.

AU - Wu, H. H.

AU - Lin, B. N.

AU - Hsu, Y. Y.

AU - Ku, H. C.

PY - 2003/5

Y1 - 2003/5

N2 - Onset of two-dimensional (2D) ferromagnetic (FM) short-range order with T2D≃150 K above A-type antiferromagnetic (AF) Néel temperature TN = 139 K was observed in 100 G low field for orbital-ordered LaMnO3. The A-type AF long-range order is stabilized through strong 2D basal plane FM superexchange coupling of orbital-ordered eg electrons and weak c-axis AF coupling. Both T2D and TN are field dependent, and merge in 1 T high field around 130 K. Mn K-edge X-ray absorption near-edge spectrum for orbital-ordered LaMnO 3 at room temperature indicates a pre-edge splitting of 2.0 eV due to weakly allowed 1s-3d dipole transition.

AB - Onset of two-dimensional (2D) ferromagnetic (FM) short-range order with T2D≃150 K above A-type antiferromagnetic (AF) Néel temperature TN = 139 K was observed in 100 G low field for orbital-ordered LaMnO3. The A-type AF long-range order is stabilized through strong 2D basal plane FM superexchange coupling of orbital-ordered eg electrons and weak c-axis AF coupling. Both T2D and TN are field dependent, and merge in 1 T high field around 130 K. Mn K-edge X-ray absorption near-edge spectrum for orbital-ordered LaMnO 3 at room temperature indicates a pre-edge splitting of 2.0 eV due to weakly allowed 1s-3d dipole transition.

KW - 2D FM short range fluctuation

KW - A-type AF order

KW - Orbital order

UR - http://www.scopus.com/inward/record.url?scp=23044479238&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=23044479238&partnerID=8YFLogxK

U2 - 10.1016/S0921-4526(02)02596-6

DO - 10.1016/S0921-4526(02)02596-6

M3 - Article

AN - SCOPUS:23044479238

VL - 329-333

SP - 829

EP - 830

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

SN - 0921-4526

IS - II

ER -