Soft x-ray resonant diffraction in transition metal oxides

K. Jessica Thomas; S. Grenier; J. P. Hill; F. C. Chou; Y. Tomioka; Y. Tokura; P. Abbamonte

doi:10.1117/12.624677

Soft x-ray resonant diffraction in transition metal oxides

K. Jessica Thomas, S. Grenier, J. P. Hill, F. C. Chou, Y. Tomioka, Y. Tokura, P. Abbamonte

Research output: Contribution to journal › Conference article › peer-review

Abstract

We discuss recent soft x-ray resonant diffraction studies of magnetic and structural correlations in manganites and cobaltates. In half-doped manganites, the resonant enhancement of super-lattice diffraction peaks resulting from orbital and magnetic order is utilized to make a direct comparison of orbital and spin correlations. The main finding is that the correlation length associated with magnetic order exceeds that of the orbital order by of order a factor of two - a result which appears at odds with orbitally driven magnetic exchange pathways. Similar resonant diffraction measurements at the Co L-edge were performed to study the oxygen-doped cobaltate Bi₂Sr ₂CoO_6+δ, in which we find a surprising incommensurate antiferromagnetic order.

Original language	English (US)
Article number	59322A
Pages (from-to)	1-9
Number of pages	9
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	5932
DOIs	https://doi.org/10.1117/12.624677
State	Published - 2005
Externally published	Yes
Event	Strongly Correlated Electron Materials: Physics and Nanoengineering - San Diego, CA, United States Duration: Jul 31 2005 → Aug 4 2005

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

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title = "Soft x-ray resonant diffraction in transition metal oxides",

abstract = "We discuss recent soft x-ray resonant diffraction studies of magnetic and structural correlations in manganites and cobaltates. In half-doped manganites, the resonant enhancement of super-lattice diffraction peaks resulting from orbital and magnetic order is utilized to make a direct comparison of orbital and spin correlations. The main finding is that the correlation length associated with magnetic order exceeds that of the orbital order by of order a factor of two - a result which appears at odds with orbitally driven magnetic exchange pathways. Similar resonant diffraction measurements at the Co L-edge were performed to study the oxygen-doped cobaltate Bi2Sr 2CoO6+δ, in which we find a surprising incommensurate antiferromagnetic order.",

author = "Thomas, {K. Jessica} and S. Grenier and Hill, {J. P.} and Chou, {F. C.} and Y. Tomioka and Y. Tokura and P. Abbamonte",

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T1 - Soft x-ray resonant diffraction in transition metal oxides

AU - Thomas, K. Jessica

AU - Grenier, S.

AU - Hill, J. P.

AU - Chou, F. C.

AU - Tomioka, Y.

AU - Tokura, Y.

AU - Abbamonte, P.

PY - 2005

Y1 - 2005

N2 - We discuss recent soft x-ray resonant diffraction studies of magnetic and structural correlations in manganites and cobaltates. In half-doped manganites, the resonant enhancement of super-lattice diffraction peaks resulting from orbital and magnetic order is utilized to make a direct comparison of orbital and spin correlations. The main finding is that the correlation length associated with magnetic order exceeds that of the orbital order by of order a factor of two - a result which appears at odds with orbitally driven magnetic exchange pathways. Similar resonant diffraction measurements at the Co L-edge were performed to study the oxygen-doped cobaltate Bi2Sr 2CoO6+δ, in which we find a surprising incommensurate antiferromagnetic order.

AB - We discuss recent soft x-ray resonant diffraction studies of magnetic and structural correlations in manganites and cobaltates. In half-doped manganites, the resonant enhancement of super-lattice diffraction peaks resulting from orbital and magnetic order is utilized to make a direct comparison of orbital and spin correlations. The main finding is that the correlation length associated with magnetic order exceeds that of the orbital order by of order a factor of two - a result which appears at odds with orbitally driven magnetic exchange pathways. Similar resonant diffraction measurements at the Co L-edge were performed to study the oxygen-doped cobaltate Bi2Sr 2CoO6+δ, in which we find a surprising incommensurate antiferromagnetic order.

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JF - Proceedings of SPIE - The International Society for Optical Engineering

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