Charge-ordered state in half-doped Bi-based manganites studied by O17 and Bi209 NMR

A. Trokiner; S. Verkhovskii; A. Yakubovskii; K. Kumagai; S. W. Cheong; D. Khomskii; Y. Furukawa; J. S. Ahn; A. Pogudin; V. Ogloblichev; A. Gerashenko; K. Mikhalev; Yu Piskunov

doi:10.1103/PhysRevB.72.054442

Charge-ordered state in half-doped Bi-based manganites studied by O17 and Bi209 NMR

A. Trokiner, S. Verkhovskii, A. Yakubovskii, K. Kumagai, S. W. Cheong, D. Khomskii, Y. Furukawa, J. S. Ahn, A. Pogudin, V. Ogloblichev, A. Gerashenko, K. Mikhalev, Yu Piskunov

School of Arts and Sciences, New High Energy Theory Center

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

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Abstract

We present a Bi209 and O17 NMR study of the Mn electron spin correlations developed in the charge ordered state of Bi0.5 Sr0.5 MnO3 and Bi0.5 Ca0.5 MnO3. The unusually large local magnetic field Hloc209 indicates the dominant 6 s2 character of the lone electron pair of Bi3+ ions in both compounds, probably, responsible for high charge ordering temperature TCO. The observed difference in Hloc209 for Bi0.5 Sr0.5 MnO3 to Bi0.5 Ca0.5 MnO3 is suggested to be due to a decrease in the canting of the staggered magnetic moments of Mn3+ ions. The modification of the O17 spectra below TCO demonstrates that the line due to the apical oxygen is a unique local tool to study the development of the Mn spin correlations. In the AF state the analysis of the O17 spectrum of Bi0.5 Sr0.5 MnO3 points toward a bond-centered model of the CO state in this material.

Original language	English (US)
Article number	054442
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	72
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevB.72.054442
State	Published - Aug 1 2005

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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Trokiner, A., Verkhovskii, S., Yakubovskii, A., Kumagai, K., Cheong, S. W., Khomskii, D., Furukawa, Y., Ahn, J. S., Pogudin, A., Ogloblichev, V., Gerashenko, A., Mikhalev, K., & Piskunov, Y. (2005). Charge-ordered state in half-doped Bi-based manganites studied by O17 and Bi209 NMR. Physical Review B - Condensed Matter and Materials Physics, 72(5), Article 054442. https://doi.org/10.1103/PhysRevB.72.054442

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title = "Charge-ordered state in half-doped Bi-based manganites studied by O17 and Bi209 NMR",

abstract = "We present a Bi209 and O17 NMR study of the Mn electron spin correlations developed in the charge ordered state of Bi0.5 Sr0.5 MnO3 and Bi0.5 Ca0.5 MnO3. The unusually large local magnetic field Hloc209 indicates the dominant 6 s2 character of the lone electron pair of Bi3+ ions in both compounds, probably, responsible for high charge ordering temperature TCO. The observed difference in Hloc209 for Bi0.5 Sr0.5 MnO3 to Bi0.5 Ca0.5 MnO3 is suggested to be due to a decrease in the canting of the staggered magnetic moments of Mn3+ ions. The modification of the O17 spectra below TCO demonstrates that the line due to the apical oxygen is a unique local tool to study the development of the Mn spin correlations. In the AF state the analysis of the O17 spectrum of Bi0.5 Sr0.5 MnO3 points toward a bond-centered model of the CO state in this material.",

author = "A. Trokiner and S. Verkhovskii and A. Yakubovskii and K. Kumagai and Cheong, {S. W.} and D. Khomskii and Y. Furukawa and Ahn, {J. S.} and A. Pogudin and V. Ogloblichev and A. Gerashenko and K. Mikhalev and Yu Piskunov",

year = "2005",

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doi = "10.1103/PhysRevB.72.054442",

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Trokiner, A, Verkhovskii, S, Yakubovskii, A, Kumagai, K, Cheong, SW, Khomskii, D, Furukawa, Y, Ahn, JS, Pogudin, A, Ogloblichev, V, Gerashenko, A, Mikhalev, K & Piskunov, Y 2005, 'Charge-ordered state in half-doped Bi-based manganites studied by O17 and Bi209 NMR', Physical Review B - Condensed Matter and Materials Physics, vol. 72, no. 5, 054442. https://doi.org/10.1103/PhysRevB.72.054442

TY - JOUR

T1 - Charge-ordered state in half-doped Bi-based manganites studied by O17 and Bi209 NMR

AU - Trokiner, A.

AU - Verkhovskii, S.

AU - Yakubovskii, A.

AU - Kumagai, K.

AU - Cheong, S. W.

AU - Khomskii, D.

AU - Furukawa, Y.

AU - Ahn, J. S.

AU - Pogudin, A.

AU - Ogloblichev, V.

AU - Gerashenko, A.

AU - Mikhalev, K.

AU - Piskunov, Yu

PY - 2005/8/1

Y1 - 2005/8/1

N2 - We present a Bi209 and O17 NMR study of the Mn electron spin correlations developed in the charge ordered state of Bi0.5 Sr0.5 MnO3 and Bi0.5 Ca0.5 MnO3. The unusually large local magnetic field Hloc209 indicates the dominant 6 s2 character of the lone electron pair of Bi3+ ions in both compounds, probably, responsible for high charge ordering temperature TCO. The observed difference in Hloc209 for Bi0.5 Sr0.5 MnO3 to Bi0.5 Ca0.5 MnO3 is suggested to be due to a decrease in the canting of the staggered magnetic moments of Mn3+ ions. The modification of the O17 spectra below TCO demonstrates that the line due to the apical oxygen is a unique local tool to study the development of the Mn spin correlations. In the AF state the analysis of the O17 spectrum of Bi0.5 Sr0.5 MnO3 points toward a bond-centered model of the CO state in this material.

AB - We present a Bi209 and O17 NMR study of the Mn electron spin correlations developed in the charge ordered state of Bi0.5 Sr0.5 MnO3 and Bi0.5 Ca0.5 MnO3. The unusually large local magnetic field Hloc209 indicates the dominant 6 s2 character of the lone electron pair of Bi3+ ions in both compounds, probably, responsible for high charge ordering temperature TCO. The observed difference in Hloc209 for Bi0.5 Sr0.5 MnO3 to Bi0.5 Ca0.5 MnO3 is suggested to be due to a decrease in the canting of the staggered magnetic moments of Mn3+ ions. The modification of the O17 spectra below TCO demonstrates that the line due to the apical oxygen is a unique local tool to study the development of the Mn spin correlations. In the AF state the analysis of the O17 spectrum of Bi0.5 Sr0.5 MnO3 points toward a bond-centered model of the CO state in this material.

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ER -

Charge-ordered state in half-doped Bi-based manganites studied by O17 and Bi209 NMR

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