Magnetic and orbital excitations in manganese oxides

W. Koshibae; S. Ishihara; Y. Kawamura; S. Okamoto; J. Inoue; S. Maekawa

doi:10.1016/S0921-4526(96)00819-8

Magnetic and orbital excitations in manganese oxides

W. Koshibae, S. Ishihara, Y. Kawamura, S. Okamoto, J. Inoue, S. Maekawa

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

1 Citation (Scopus)

Abstract

The magnetic and orbital structures in manganese oxides with perovskite structure are examined by using the exact diagonalization method on finite-size clusters. The orbital degeneracy in the eg states is taken into account based on the effective Hamiltonian derived in the insulating state with strong Coulomb interaction. It is shown that A-, C- and G-type antiferromagnetic orderings occur as a result of competition or cooperation of the superexchange interaction of t_2g spins and the coupling between spins and orbitals. The spin and orbital excitations are also examined.

Original language	English
Pages (from-to)	1058-1060
Number of pages	3
Journal	Physica B: Condensed Matter
Volume	230-232
DOIs	https://doi.org/10.1016/S0921-4526(96)00819-8
Publication status	Published - 1997 Feb
Externally published	Yes

Keywords

Exact diagonalization
LaMnO
Spin and orbital wave

ASJC Scopus subject areas

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

Access to Document

10.1016/S0921-4526(96)00819-8

Fingerprint Dive into the research topics of 'Magnetic and orbital excitations in manganese oxides'. Together they form a unique fingerprint.

Cite this

@article{7dd0e08538104b2b92ea8b7cb1b27b1a,

title = "Magnetic and orbital excitations in manganese oxides",

abstract = "The magnetic and orbital structures in manganese oxides with perovskite structure are examined by using the exact diagonalization method on finite-size clusters. The orbital degeneracy in the eg states is taken into account based on the effective Hamiltonian derived in the insulating state with strong Coulomb interaction. It is shown that A-, C- and G-type antiferromagnetic orderings occur as a result of competition or cooperation of the superexchange interaction of t2g spins and the coupling between spins and orbitals. The spin and orbital excitations are also examined.",

keywords = "Exact diagonalization, LaMnO, Spin and orbital wave",

author = "W. Koshibae and S. Ishihara and Y. Kawamura and S. Okamoto and J. Inoue and S. Maekawa",

year = "1997",

month = feb,

doi = "10.1016/S0921-4526(96)00819-8",

language = "English",

volume = "230-232",

pages = "1058--1060",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",

publisher = "Elsevier",

}

TY - JOUR

T1 - Magnetic and orbital excitations in manganese oxides

AU - Koshibae, W.

AU - Ishihara, S.

AU - Kawamura, Y.

AU - Okamoto, S.

AU - Inoue, J.

AU - Maekawa, S.

PY - 1997/2

Y1 - 1997/2

N2 - The magnetic and orbital structures in manganese oxides with perovskite structure are examined by using the exact diagonalization method on finite-size clusters. The orbital degeneracy in the eg states is taken into account based on the effective Hamiltonian derived in the insulating state with strong Coulomb interaction. It is shown that A-, C- and G-type antiferromagnetic orderings occur as a result of competition or cooperation of the superexchange interaction of t2g spins and the coupling between spins and orbitals. The spin and orbital excitations are also examined.

AB - The magnetic and orbital structures in manganese oxides with perovskite structure are examined by using the exact diagonalization method on finite-size clusters. The orbital degeneracy in the eg states is taken into account based on the effective Hamiltonian derived in the insulating state with strong Coulomb interaction. It is shown that A-, C- and G-type antiferromagnetic orderings occur as a result of competition or cooperation of the superexchange interaction of t2g spins and the coupling between spins and orbitals. The spin and orbital excitations are also examined.

KW - Exact diagonalization

KW - LaMnO

KW - Spin and orbital wave

UR - http://www.scopus.com/inward/record.url?scp=0031074298&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0031074298&partnerID=8YFLogxK

U2 - 10.1016/S0921-4526(96)00819-8

DO - 10.1016/S0921-4526(96)00819-8

M3 - Article

AN - SCOPUS:0031074298

VL - 230-232

SP - 1058

EP - 1060

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

SN - 0921-4526

ER -

Magnetic and orbital excitations in manganese oxides

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Cite this