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2005 | 107 | 1 | 211-214
Article title

Ultrafast Optical and Magneto-Optical Dynamics in Colossal-Magnetoresistance Manganites

Content
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Languages of publication
EN
Abstracts
EN
Transient pump-probe reflectance measurements on La_{0.67}Ca_{0.33}MnO_3/MgO and La_{0.67} Ca_{0.33}MnO_3/SrTiO_3 thin films reveal a hitherto unknown magnetization-dependent energy gap that determines the relaxation process of the optically excited charge carriers on the picosecond time scale. In the case of La_{0.67}Ca_{0.33}MnO_3/SrTiO_3, the subsequent reflectance dynamics at low temperatures is determined to be substrate-induced strain that drives the sample into a metastable state characterized by an increased number of paramagnetic domains.
Keywords
EN
Publisher

Year
Volume
107
Issue
1
Pages
211-214
Physical description
Dates
published
2005-01
received
2004-08-22
Contributors
author
  • Physikalisches Institut, J.W. Goethe-Universität, Frankfurt/Main 60054, Germany
  • Department of Semiconductor Physics, Belorussian State University, Minsk 220050, Republic of Belarus
author
  • Physikalisches Institut, J.W. Goethe-Universität, Frankfurt/Main 60054, Germany
author
  • Institut für Physik, J. Gutenberg-Universität Mainz, Mainz 60054, Germany
author
  • Physikalisches Institut, J.W. Goethe-Universität, Frankfurt/Main 60054, Germany
References
  • 1. C. Zener, Phys. Rev. B, 82, 403, 1951
  • 2. E. Dagotto, T. Hotta, A. Moreo, Phys. Rep., 344, 1, 2001
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv107n131kz
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