Direct Observation of Orbital Order in Manganites by MEM Charge-Density Study

Masaki Takata; Eiji Nishibori; Kenichi Kato; Makoto Sakata; Yutaka Moritomo

doi:10.1143/JPSJ.68.2190

Direct Observation of Orbital Order in Manganites by MEM Charge-Density Study

Masaki Takata, Eiji Nishibori, Kenichi Kato, Makoto Sakata, Yutaka Moritomo

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

98 Citations (Scopus)

Abstract

We have investigated the charge-density distribution of an antiferromagnetic bi-layered manganite, NdSr₂Mn₂O₇, by the maximum entropy method (MEM) using the synchrotron X-ray powder data. The magnetic structure below TN = 150 K is known to be a layered-type (A-type). We have found a significant change of the electron distribution around the Mn site below T_N. Our observation indicates dx² - y²-orbilal polarization in the A-type antiferromagnetic state.

Original language	English
Pages (from-to)	2190-2193
Number of pages	4
Journal	journal of the physical society of japan
Volume	68
Issue number	7
DOIs	https://doi.org/10.1143/JPSJ.68.2190
Publication status	Published - 1999 Jul
Externally published	Yes

Keywords

A-type structure
Charge density
Layered manganites
Maximum entropy method

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1143/JPSJ.68.2190

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abstract = "We have investigated the charge-density distribution of an antiferromagnetic bi-layered manganite, NdSr2Mn2O7, by the maximum entropy method (MEM) using the synchrotron X-ray powder data. The magnetic structure below TN = 150 K is known to be a layered-type (A-type). We have found a significant change of the electron distribution around the Mn site below TN. Our observation indicates dx2 - y2-orbilal polarization in the A-type antiferromagnetic state.",

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author = "Masaki Takata and Eiji Nishibori and Kenichi Kato and Makoto Sakata and Yutaka Moritomo",

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AU - Nishibori, Eiji

AU - Kato, Kenichi

AU - Sakata, Makoto

AU - Moritomo, Yutaka

PY - 1999/7

Y1 - 1999/7

N2 - We have investigated the charge-density distribution of an antiferromagnetic bi-layered manganite, NdSr2Mn2O7, by the maximum entropy method (MEM) using the synchrotron X-ray powder data. The magnetic structure below TN = 150 K is known to be a layered-type (A-type). We have found a significant change of the electron distribution around the Mn site below TN. Our observation indicates dx2 - y2-orbilal polarization in the A-type antiferromagnetic state.

AB - We have investigated the charge-density distribution of an antiferromagnetic bi-layered manganite, NdSr2Mn2O7, by the maximum entropy method (MEM) using the synchrotron X-ray powder data. The magnetic structure below TN = 150 K is known to be a layered-type (A-type). We have found a significant change of the electron distribution around the Mn site below TN. Our observation indicates dx2 - y2-orbilal polarization in the A-type antiferromagnetic state.

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KW - Charge density

KW - Layered manganites

KW - Maximum entropy method

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Direct Observation of Orbital Order in Manganites by MEM Charge-Density Study

Abstract

Keywords

ASJC Scopus subject areas

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