Transition between Two Ferromagnetic States Driven by Orbital Ordering in La0.88 Sr0.12 MnO3

Y. Endoh; K. Hirota; S. Ishihara; S. Okamoto; Y. Murakami; A. Nishizawa; T. Fukuda; H. Kimura; H. Nojiri; K. Kaneko; S. Maekawa

doi:10.1103/PhysRevLett.82.4328

Transition between Two Ferromagnetic States Driven by Orbital Ordering in La_0.88 Sr_0.12 MnO₃

Y. Endoh, K. Hirota, S. Ishihara, S. Okamoto, Y. Murakami, A. Nishizawa, T. Fukuda, H. Kimura, H. Nojiri, K. Kaneko, S. Maekawa

Materials Theory

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

287 Scopus citations

Abstract

A lightly doped manganite La 0.88 Sr 0.12 MnO 3 exhibits a phase transition at T_OO= 145 K from a ferromagnetic metal (T_C = 172 K) to a novel ferromagnetic insulator. We identify that the key parameter in the transition is the orbital degree of freedom in e g electrons. By utilizing the resonant x-ray scattering, orbital ordering is directly detected below T_OOin spite of a significant diminution of the cooperative Jahn-Teller distortion. The experimental features are well described by a theory treating the orbital degree of freedom under strong electron correlation. The present studies uncover a crucial role of the orbital degree of freedom in the metal-insulator transition in lightly doped manganites.

Original language	English
Pages (from-to)	4328-4331
Number of pages	4
Journal	Physical Review Letters
Volume	82
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevLett.82.4328
State	Published - 1999

Access to Document

10.1103/PhysRevLett.82.4328

Cite this

@article{9dccd7883eaf4224ad635343b02cc902,

title = "Transition between Two Ferromagnetic States Driven by Orbital Ordering in La0.88 Sr0.12 MnO3",

abstract = "A lightly doped manganite La 0.88 Sr 0.12 MnO 3 exhibits a phase transition at TOO= 145 K from a ferromagnetic metal (TC = 172 K) to a novel ferromagnetic insulator. We identify that the key parameter in the transition is the orbital degree of freedom in e g electrons. By utilizing the resonant x-ray scattering, orbital ordering is directly detected below TOOin spite of a significant diminution of the cooperative Jahn-Teller distortion. The experimental features are well described by a theory treating the orbital degree of freedom under strong electron correlation. The present studies uncover a crucial role of the orbital degree of freedom in the metal-insulator transition in lightly doped manganites.",

author = "Y. Endoh and K. Hirota and S. Ishihara and S. Okamoto and Y. Murakami and A. Nishizawa and T. Fukuda and H. Kimura and H. Nojiri and K. Kaneko and S. Maekawa",

year = "1999",

doi = "10.1103/PhysRevLett.82.4328",

language = "English",

volume = "82",

pages = "4328--4331",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "21",

}

TY - JOUR

T1 - Transition between Two Ferromagnetic States Driven by Orbital Ordering in La0.88 Sr0.12 MnO3

AU - Endoh, Y.

AU - Hirota, K.

AU - Ishihara, S.

AU - Okamoto, S.

AU - Murakami, Y.

AU - Nishizawa, A.

AU - Fukuda, T.

AU - Kimura, H.

AU - Nojiri, H.

AU - Kaneko, K.

AU - Maekawa, S.

PY - 1999

Y1 - 1999

N2 - A lightly doped manganite La 0.88 Sr 0.12 MnO 3 exhibits a phase transition at TOO= 145 K from a ferromagnetic metal (TC = 172 K) to a novel ferromagnetic insulator. We identify that the key parameter in the transition is the orbital degree of freedom in e g electrons. By utilizing the resonant x-ray scattering, orbital ordering is directly detected below TOOin spite of a significant diminution of the cooperative Jahn-Teller distortion. The experimental features are well described by a theory treating the orbital degree of freedom under strong electron correlation. The present studies uncover a crucial role of the orbital degree of freedom in the metal-insulator transition in lightly doped manganites.

AB - A lightly doped manganite La 0.88 Sr 0.12 MnO 3 exhibits a phase transition at TOO= 145 K from a ferromagnetic metal (TC = 172 K) to a novel ferromagnetic insulator. We identify that the key parameter in the transition is the orbital degree of freedom in e g electrons. By utilizing the resonant x-ray scattering, orbital ordering is directly detected below TOOin spite of a significant diminution of the cooperative Jahn-Teller distortion. The experimental features are well described by a theory treating the orbital degree of freedom under strong electron correlation. The present studies uncover a crucial role of the orbital degree of freedom in the metal-insulator transition in lightly doped manganites.

UR - https://www.scopus.com/pages/publications/0001300213

U2 - 10.1103/PhysRevLett.82.4328

DO - 10.1103/PhysRevLett.82.4328

M3 - Article

AN - SCOPUS:0001300213

SN - 0031-9007

VL - 82

SP - 4328

EP - 4331

JO - Physical Review Letters

JF - Physical Review Letters

IS - 21

ER -

Transition between Two Ferromagnetic States Driven by Orbital Ordering in La_0.88 Sr_0.12 MnO₃

Abstract

Access to Document

Other files and links

Fingerprint

Cite this