Magnetism, conductivity, and orbital order in (LaMnO3) 2n/(SrMnO3)n superlattices

Shuai Dong; Rong Yu; Seiji Yunoki; Gonzalo Alvarez; J. M. Liu; Elbio Dagotto

doi:10.1103/PhysRevB.78.201102

Magnetism, conductivity, and orbital order in (LaMnO₃) _2n/(SrMnO₃)_n superlattices

Shuai Dong, Rong Yu, Seiji Yunoki, Gonzalo Alvarez, J. M. Liu, Elbio Dagotto

Computational Chemistry and Nanomaterial

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

87 Scopus citations

Abstract

The modulation of charge density and spin order in (LaMnO3)2n/(SrMnO3)n(n= 1-4) superlattices is studied via Monte Carlo simulations of the double-exchange model. G-type antiferromagnetic barriers in the SrMnO3 regions with low charge density are found to separate ferromagnetic LaMnO3 layers with high charge density. A metal-insulator transition with increasing n is observed in the direction perpendicular to the interfaces. Our simulations provide insight into how disorder-induced localization may cause the metal-insulator transition occurring at n=3 in experiments.

Original language	English
Article number	201102
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	78
Issue number	20
DOIs	https://doi.org/10.1103/PhysRevB.78.201102
State	Published - Nov 21 2008

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abstract = "The modulation of charge density and spin order in (LaMnO3)2n/(SrMnO3)n(n= 1-4) superlattices is studied via Monte Carlo simulations of the double-exchange model. G-type antiferromagnetic barriers in the SrMnO3 regions with low charge density are found to separate ferromagnetic LaMnO3 layers with high charge density. A metal-insulator transition with increasing n is observed in the direction perpendicular to the interfaces. Our simulations provide insight into how disorder-induced localization may cause the metal-insulator transition occurring at n=3 in experiments.",

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AU - Dong, Shuai

AU - Yu, Rong

AU - Yunoki, Seiji

AU - Alvarez, Gonzalo

AU - Liu, J. M.

AU - Dagotto, Elbio

PY - 2008/11/21

Y1 - 2008/11/21

N2 - The modulation of charge density and spin order in (LaMnO3)2n/(SrMnO3)n(n= 1-4) superlattices is studied via Monte Carlo simulations of the double-exchange model. G-type antiferromagnetic barriers in the SrMnO3 regions with low charge density are found to separate ferromagnetic LaMnO3 layers with high charge density. A metal-insulator transition with increasing n is observed in the direction perpendicular to the interfaces. Our simulations provide insight into how disorder-induced localization may cause the metal-insulator transition occurring at n=3 in experiments.

AB - The modulation of charge density and spin order in (LaMnO3)2n/(SrMnO3)n(n= 1-4) superlattices is studied via Monte Carlo simulations of the double-exchange model. G-type antiferromagnetic barriers in the SrMnO3 regions with low charge density are found to separate ferromagnetic LaMnO3 layers with high charge density. A metal-insulator transition with increasing n is observed in the direction perpendicular to the interfaces. Our simulations provide insight into how disorder-induced localization may cause the metal-insulator transition occurring at n=3 in experiments.

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JO - Physical Review B - Condensed Matter and Materials Physics

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IS - 20

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ER -

Magnetism, conductivity, and orbital order in (LaMnO₃) _2n/(SrMnO₃)_n superlattices

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