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

J. Lee | Zendy; S. A. Trugman | Zendy; C. L. Zhang | Zendy; Diyar Talbayev | Zendy; Xiaoshan Xu | Zendy; SangWook Cheong | Zendy; Dmitry Yarotski | Zendy; Antoinette J. Taylor | Zendy; Rohit P. Prasankumar | Zendy

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

Author(s) -

J. Lee,

S. A. Trugman,

C. L. Zhang,

Diyar Talbayev,

Xiaoshan Xu,

SangWook Cheong,

Dmitry Yarotski,

Antoinette J. Taylor,

Rohit P. Prasankumar

Publication year - 2015

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.4927739

Subject(s) - polaron , phonon , condensed matter physics , femtosecond , electron , materials science , charge (physics) , ferrimagnetism , physics , magnetic field , laser , optics , magnetization , quantum mechanics

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.

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