Magnetopolaron-induced optical response in transition metal oxides

J. M. Caicedo, J. Fontcuberta, and G. Herranz
Phys. Rev. B 89, 045121 – Published 15 January 2014

Abstract

We report on the optical response of different magnetic oxides (manganites, ruthenates, and magnetite) and show that for photons with energies ≈1.5−3.5 eV the intensity of light reflected by these epitaxial oxide thin films is strongly modulated by magnetic fields. We argue that this behavior is related to the magnetopolaron physics, and the magnitude of the magnetoreflectance is a fingerprint and a measure of the electron-lattice coupling strength. Our research provides the basis for a fresh experimental approach to the physics of strongly correlated electronic systems.

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  • Received 31 October 2013
  • Revised 23 December 2013

DOI:https://doi.org/10.1103/PhysRevB.89.045121

©2014 American Physical Society

Authors & Affiliations

J. M. Caicedo, J. Fontcuberta, and G. Herranz*

  • Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus de la UAB, Bellaterra 08193, Catalonia, Spain

  • *gherranz@icmab.es

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Vol. 89, Iss. 4 — 15 January 2014

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