The influence of charge and magnetic order on polaron and acoustic phonon dynamics in LuFe2O4

J. Lee, S. A. Trugman, C. L. Zhang, D. Talbayev, X. S. Xu, Sang-Wook Cheong, D. A. Yarotski, A. J. Taylor, R. P. Prasankumar

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Femtosecond optical pump-probe spectroscopy is used to reveal the influence of charge and magnetic order on polaron dynamics and coherent acoustic phonon oscillations in single crystals of charge-ordered, ferrimagnetic LuFe2O4. We experimentally observed the influence of magnetic order on polaron dynamics. We also observed a correlation between charge order and the amplitude of the acoustic phonon oscillations, due to photoinduced changes in the lattice constant that originate from the photoexcited electrons. This provides insight into the general behavior of coherent acoustic phonon oscillations in charge-ordered materials.

Original languageEnglish (US)
Article number042906
JournalApplied Physics Letters
Volume107
Issue number4
DOIs
StatePublished - Jul 27 2015

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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