Published January 1, 1999
| Submitted + Published
Journal Article
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Infrared studies of a La_(0.67)Ca_(0.33)MnO_3 single crystal: Optical magnetoconductivity in a half-metallic ferromagnet
Chicago
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Abstract
The infrared reflectivity of a La_(0.67)Ca_(0.33)MnO_3 single crystal is studied over a broad range of temperatures (78–340 K), magnetic fields (0–16 T), and wave numbers (20–9000cm^(-1)). The optical conductivity gradually changes from a Drude-like behavior to a broad peak feature near 5000cm-1 in the ferromagnetic state below the Curie temperature T_C=307K. Various features of the optical conductivity bear striking resemblance to recent theoretical predictions based on the interplay between the double exchange interaction and the Jahn-Teller electron-phonon coupling. A large optical magnetoconductivity is observed near T_C.
Additional Information
© 1999 The American Physical Society. Received 30 September 1998. This research at the Institute of Solid State Physics is supported by Russian State Program under Grant No. 96031. Part of the work done at Caltech is supported by NASA/OSS and the Packard Foundation.Attached Files
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Additional details
- Eprint ID
- 28454
- Resolver ID
- CaltechAUTHORS:20111213-141105315
- Russian State Program
- 96031
- NASA
- David and Lucile Packard Foundation
- Created
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2011-12-14Created from EPrint's datestamp field
- Updated
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2021-11-09Created from EPrint's last_modified field