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Phys. Rev. Lett. 90, 187201 (2003) [4 pages]

Soft X-Ray Resonant Magnetic Diffraction

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S. B. Wilkins* and P. D. Hatton
Department of Physics, University of Durham, Rochester Building, South Road, Durham DH1 3LE, United Kingdom

M. D. Roper
CLRC, Daresbury Laboratory, Warrington, Cheshire WA4 4AD, United Kingdom

D. Prabhakaran and A. T. Boothroyd
Department of Physics, University of Oxford, Clarendon Laboratory, Parks Road, Oxford OX1 3PU, United Kingdom

Received 28 January 2003; published 8 May 2003

We have conducted the first soft x-ray diffraction experiments from a bulk single crystal, studying the bilayer manganite La2-2xSr1+2xMn2O7 with x=0.475 in which we were able to access the (002) Bragg reflection using soft x rays. The Bragg reflection displays a strong resonant enhancement at the LIII and LII manganese absorption edges. We demonstrate that the resonant enhancement of the magnetic diffraction of the (001) is extremely large, indeed so large that it exceeds that of the nonresonant Bragg diffraction. Resonant soft x-ray scattering of 3d transition metal oxides is the only technique for the atomic selective measurement of spin, charge, and orbital correlations in materials, such as high temperature superconductors, colossal magnetoresistance manganites, and charge stripe nickelates.

© 2003 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.90.187201
DOI:
10.1103/PhysRevLett.90.187201
PACS:
75.25.+z, 61.10.–i, 71.30.+h, 75.47.Lx

*Present Addresses: European Synchrotron Radiation Facility, Boîte Postal 220, F-38043 Grenoble Cedex, France, and European Commission Joint Research Centre, Institute for Transuranium Elements, Postfach 2340, D-76125, Karlsruhe, Germany.

Electronic address: p.d.hatton@durham.ac.uk