The influence of charge and magnetic order on polaron and acoustic phonon dynamics in LuFe 2 O 4

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

doi:10.1063/1.4927739

Title: The influence of charge and magnetic order on polaron and acoustic phonon dynamics in LuFe ₂ O ₄

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Abstract

Femtosecond optical pump-probe spectroscopy is used to reveal the influence of charge and magnetic order on polarondynamics and coherent acoustic phonon oscillations in single crystals of charge-ordered, ferrimagnetic LuFe₂O₄. We experimentally observed the influence of magnetic order on polarondynamics. 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. As a result, this provides insight into the general behavior of coherent acoustic phonon oscillations in charge-ordered materials.

Authors:: Lee, J.; Trugman, S. A.; Zhang, C. L.; Talbayev, D.; Xu, X. S.; Cheong, S. -W.; Yarotski, D. A.; Taylor, A. J.; Prasankumar, R. P.

Publication Date:: Mon Jul 27 00:00:00 EDT 2015

Research Org.:: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1204688

Alternate Identifier(s):: OSTI ID: 1212179; OSTI ID: 1247297; OSTI ID: 1420567

Report Number(s):: LA-UR-15-22133
Journal ID: ISSN 0003-6951

Grant/Contract Number:: FG02-07ER46382; AC52-06NA25396

Resource Type:: Published Article

Journal Name:: Applied Physics Letters

Additional Journal Information:: Journal Name: Applied Physics Letters Journal Volume: 107 Journal Issue: 4; Journal ID: ISSN 0003-6951

Publisher:: American Institute of Physics

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 36 MATERIALS SCIENCE; phonons; photoexcitations; lattice constants; polarons; stress strain relations

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                    Lee, J., Trugman, S. A., Zhang, C. L., Talbayev, D., Xu, X. S., Cheong, S. -W., Yarotski, D. A., Taylor, A. J., and Prasankumar, R. P. The influence of charge and magnetic order on polaron and acoustic phonon dynamics in LuFe 2 O 4.  United States: N. p., 2015. 
Web.  doi:10.1063/1.4927739.

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                    Lee, J., Trugman, S. A., Zhang, C. L., Talbayev, D., Xu, X. S., Cheong, S. -W., Yarotski, D. A., Taylor, A. J., & Prasankumar, R. P. The influence of charge and magnetic order on polaron and acoustic phonon dynamics in LuFe 2 O 4.  United States.  https://doi.org/10.1063/1.4927739

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                    Lee, J., Trugman, S. A., Zhang, C. L., Talbayev, D., Xu, X. S., Cheong, S. -W., Yarotski, D. A., Taylor, A. J., and Prasankumar, R. P. Mon .  
"The influence of charge and magnetic order on polaron and acoustic phonon dynamics in LuFe 2 O 4".  United States.  https://doi.org/10.1063/1.4927739.

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@article{osti_1204688,

  title        = {The influence of charge and magnetic order on polaron and acoustic phonon dynamics in LuFe 2 O 4},

  author       = {Lee, J. and Trugman, S. A. and Zhang, C. L. and Talbayev, D. and Xu, X. S. and Cheong, S. -W. and Yarotski, D. A. and Taylor, A. J. and Prasankumar, R. P.},

  abstractNote = {Femtosecond optical pump-probe spectroscopy is used to reveal the influence of charge and magnetic order on polarondynamics and coherent acoustic phonon oscillations in single crystals of charge-ordered, ferrimagnetic LuFe2O4. We experimentally observed the influence of magnetic order on polarondynamics. 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. As a result, this provides insight into the general behavior of coherent acoustic phonon oscillations in charge-ordered materials.},

  doi          = {10.1063/1.4927739},

  journal      = {Applied Physics Letters},

  number       = 4,

  volume       = 107,

  place        = {United States},

  year         = {Mon Jul 27 00:00:00 EDT 2015},

  month        = {Mon Jul 27 00:00:00 EDT 2015}

}

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Title: The influence of charge and magnetic order on polaron and acoustic phonon dynamics in LuFe 2 O 4

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Title: The influence of charge and magnetic order on polaron and acoustic phonon dynamics in LuFe ₂ O ₄