Skip to main content

Research Repository

Advanced Search

Direct observation of orbital ordering in La<SUB>0.5</SUB>Sr<SUB>1.5</SUB>MnO₄ using soft x-ray diffraction

Wilkins, S.B.; Spencer, P.D.; Hatton, P.D.; Collins, S.P.; Roper, M.D.; Prabhakaran, D.; Boothroyd, A.T.

Direct observation of orbital ordering in La<SUB>0.5</SUB>Sr<SUB>1.5</SUB>MnO₄ using soft x-ray diffraction Thumbnail


Authors

S.B. Wilkins

P.D. Spencer

P.D. Hatton

S.P. Collins

M.D. Roper

D. Prabhakaran

A.T. Boothroyd



Abstract

We report the first direct resonant soft x-ray scattering observations of orbital ordering. We have studied the low temperature phase of La0:5Sr1:5MnO4, a compound that displays charge and orbital ordering. Previous claims of orbital ordering in such materials have relied on observations at the manganese K edge. These claims have been questioned in several theoretical studies. Instead we have employed resonant soft x-ray scattering at the manganese LIII and LII edges which probes the orbital ordering directly. Energy scans at constant wave vector are compared to theoretical predictions and suggest that at all temperatures there are two separate contributions to the scattering: direct orbital ordering and strong cooperative Jahn-Teller distortions of the Mn3 ions.

Citation

Wilkins, S., Spencer, P., Hatton, P., Collins, S., Roper, M., Prabhakaran, D., & Boothroyd, A. (2003). Direct observation of orbital ordering in La0.5Sr1.5MnO₄ using soft x-ray diffraction. Physical Review Letters, 91(16), https://doi.org/10.1103/physrevlett.91.167205

Journal Article Type Article
Publication Date 2003-10
Deposit Date Jan 9, 2009
Publicly Available Date Sep 13, 2010
Journal Physical Review Letters
Print ISSN 0031-9007
Electronic ISSN 1079-7114
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 91
Issue 16
DOI https://doi.org/10.1103/physrevlett.91.167205
Keywords Magnetic order, Manganites, Scattering, Charge, Lamn03.

Files

Published Journal Article (230 Kb)
PDF

Copyright Statement
© 2003 by The American Physical Society. All rights reserved.




Downloadable Citations