Charge dynamics of perovskite manganese oxides - Effects of orbital degeneracy, electron correlation and Jahn-Teller distortion

Hiroki Nakano; Yukitoshi Motome; Masatoshi Imada

doi:10.1016/S0921-4526(99)02569-7

Charge dynamics of perovskite manganese oxides - Effects of orbital degeneracy, electron correlation and Jahn-Teller distortion

Hiroki Nakano^*, Yukitoshi Motome, Masatoshi Imada

^*Corresponding author for this work

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

Abstract

To understand the incoherent optical response of La_{1 - x} Sr_xMnO₃ in the ferromagnetic and metallic phase near the metal-insulator transition, we examine the effects of e_g-orbital degeneracy, Coulomb interactions, and Jahn-Teller distortions under the perfect polarization of spins, employing the Lanczös diagonalization method. Orbital fluctuations by the Coulomb interaction induce a large and broad structure of the incoherence and suppress Drude weight. The Jahn-Teller distortions work cooperatively to enhance this incoherence.

Original language	English
Pages (from-to)	1406-1407
Number of pages	2
Journal	Physica B: Condensed Matter
Volume	284-288
Issue number	PART II
DOIs	https://doi.org/10.1016/S0921-4526(99)02569-7
Publication status	Published - 2000
Externally published	Yes

Keywords

Incoherent charge dynamics
Jahn-Teller distortion
Optical conductivity
Perovskite manganites

ASJC Scopus subject areas

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

Access to Document

10.1016/S0921-4526(99)02569-7

Cite this

@article{d784938e58844b0c9178bcefef588dff,

title = "Charge dynamics of perovskite manganese oxides - Effects of orbital degeneracy, electron correlation and Jahn-Teller distortion",

abstract = "To understand the incoherent optical response of La1 - x SrxMnO3 in the ferromagnetic and metallic phase near the metal-insulator transition, we examine the effects of eg-orbital degeneracy, Coulomb interactions, and Jahn-Teller distortions under the perfect polarization of spins, employing the Lancz{\"o}s diagonalization method. Orbital fluctuations by the Coulomb interaction induce a large and broad structure of the incoherence and suppress Drude weight. The Jahn-Teller distortions work cooperatively to enhance this incoherence.",

keywords = "Incoherent charge dynamics, Jahn-Teller distortion, Optical conductivity, Perovskite manganites",

author = "Hiroki Nakano and Yukitoshi Motome and Masatoshi Imada",

note = "Funding Information: This work is supported by {\textquoteleft}Research for the Future Program{\textquoteright} from the Japan Society for the Promotion of Science (JSPS-RFTF 97P01103). Y.M. is supported by Research Fellowships of the JSPS for Young Scientists. Computations were in part performed using the facilities of the Supercomputer Center, Institute for Solid State Physics, University of Tokyo. ",

year = "2000",

doi = "10.1016/S0921-4526(99)02569-7",

language = "English",

volume = "284-288",

pages = "1406--1407",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",

publisher = "Elsevier",

number = "PART II",

}

TY - JOUR

T1 - Charge dynamics of perovskite manganese oxides - Effects of orbital degeneracy, electron correlation and Jahn-Teller distortion

AU - Nakano, Hiroki

AU - Motome, Yukitoshi

AU - Imada, Masatoshi

N1 - Funding Information: This work is supported by ‘Research for the Future Program’ from the Japan Society for the Promotion of Science (JSPS-RFTF 97P01103). Y.M. is supported by Research Fellowships of the JSPS for Young Scientists. Computations were in part performed using the facilities of the Supercomputer Center, Institute for Solid State Physics, University of Tokyo.

PY - 2000

Y1 - 2000

N2 - To understand the incoherent optical response of La1 - x SrxMnO3 in the ferromagnetic and metallic phase near the metal-insulator transition, we examine the effects of eg-orbital degeneracy, Coulomb interactions, and Jahn-Teller distortions under the perfect polarization of spins, employing the Lanczös diagonalization method. Orbital fluctuations by the Coulomb interaction induce a large and broad structure of the incoherence and suppress Drude weight. The Jahn-Teller distortions work cooperatively to enhance this incoherence.

AB - To understand the incoherent optical response of La1 - x SrxMnO3 in the ferromagnetic and metallic phase near the metal-insulator transition, we examine the effects of eg-orbital degeneracy, Coulomb interactions, and Jahn-Teller distortions under the perfect polarization of spins, employing the Lanczös diagonalization method. Orbital fluctuations by the Coulomb interaction induce a large and broad structure of the incoherence and suppress Drude weight. The Jahn-Teller distortions work cooperatively to enhance this incoherence.

KW - Incoherent charge dynamics

KW - Jahn-Teller distortion

KW - Optical conductivity

KW - Perovskite manganites

UR - http://www.scopus.com/inward/record.url?scp=0033699763&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0033699763&partnerID=8YFLogxK

U2 - 10.1016/S0921-4526(99)02569-7

DO - 10.1016/S0921-4526(99)02569-7

M3 - Article

AN - SCOPUS:0033699763

SN - 0921-4526

VL - 284-288

SP - 1406

EP - 1407

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

IS - PART II

ER -

Charge dynamics of perovskite manganese oxides - Effects of orbital degeneracy, electron correlation and Jahn-Teller distortion

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this