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Ultrafast mid-infrared dynamics in the colossal magnetoresistance pyrochlore Tl2Mn2O7

R. P. Prasankumar, A. J. Taylor, R. D. Averitt, H. Okamura, H. Imai, Y. Shimakawa, and Y. Kubo

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Abstract

An optical pump, mid-infrared (IR) probe system is used to investigate ultrafast temperature-dependent dynamics of the colossal magnetoresistance pyrochlore Tl2Mn2O7. The dynamics change appreciably near the Curie temperature (Tc), indicating a dependence on ferromagnetic ordering.

© 2004 Optical Society of America

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