Journal article

Spatial cross-over of polarons across the CMR transition in La0.75Ca0.25MnO3 system.

Abstract:: We have measured high resolution Mn K-edge x-ray absorption near edge structure (XANES) and extended x-ray absorption fine structure (EXAFS) to investigate the local atomic displacements in the MnO6 octahedra and their importance to the colossal magnetoresistance in the La0.75Ca0.25MnO3 system. A combined analysis of the XANES and EXAFS shows that the colossal-magneto resistance (CMR) transition is characterized by a transition from a phase of delocalized intermediate polarons to a phase showing coexistence of the intermediate and small polarons accompanied by the opening of a gap at EF due to Jahn Teller splitting of eg orbitals.

Publication status:: Published

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APA Style

Lanzara, A., Natoli, F., Saini, N., Bianconi, A., & Radaelli, P. (1999). Spatial cross-over of polarons across the CMR transition in La0.75Ca0.25MnO3 system. Journal of Synchrotron Radiation, 6(Pt 3), 776–778.

MLA Style

Lanzara, A, et al. “Spatial Cross-over of Polarons across the CMR Transition in La0.75Ca0.25MnO3 System.” Journal of Synchrotron Radiation, vol. 6, no. Pt 3, 1999, pp. 776–78.

Chicago Style

Lanzara, A, F Natoli, N Saini, A Bianconi, and P Radaelli. 1999. “Spatial Cross-over of Polarons across the CMR Transition in La0.75Ca0.25MnO3 System.” Journal of Synchrotron Radiation 6 (Pt 3): 776–78.
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Publisher copy:: 10.1107/s090904959801735x

Authors

+ Lanzara, A More by this author

Role:: Author

+ Natoli, F More by this author

Role:: Author

+ Saini, N More by this author

Role:: Author

+ Bianconi, A More by this author

Role:: Author

+ Radaelli, P More by this author

Institution:: University of Oxford
Division:: MPLS
Department:: Physics
Sub department:: Condensed Matter Physics
Role:: Author

Journal:: Journal of synchrotron radiation More from this journal
Volume:: 6
Issue:: Pt 3
Pages:: 776-778
Publication date:: 1999-05-01
DOI:: 10.1107/s090904959801735x
EISSN:: 1600-5775
ISSN:: 0909-0495

Language:: English
Keywords:: polarons

manganites

metal-insulator transition

CMR
Pubs id:: pubs:66276
UUID:: uuid:2b9d6995-2c13-40a9-85cd-ff5459c828b9
Local pid:: pubs:66276
Source identifiers:: 66276
Deposit date:: 2012-12-19
ARK identifier:: ark:/29072/ora_2b9d69952c1340a985cdff5459c828b9

Terms of use

Copyright date:: 1999

Licence:: Terms and Conditions of Use for Oxford University Research Archive

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