Abstract
We observed ultra-short laser pulse-induced transient optical anisotropy in a LaMnO3 thin film. The anisotropy was induced by laser pulse irradiation with a fluence of less than 0.1 mJ/cm2 at room temperature. The transmittance and reflectance showed strong dependence on the polarization states of the pulses. For parallel and perpendicular polarization states, there exists a difference of approximately 0.2% for transmittance and 0.05% for reflectance at 0.3 ps after the irradiation with a pump pulse, respectively. The theoretical values for optical transmittance and reflectance with an assumption of an orbital ordering of 3d eg electrons in Mn3+ ions showed good agreement with the experimental results, demonstrating that the transient optical anisotropy in LaMnO3 thin film is due to the photo-induced symmetry-breaking of orbital ordering in excited states.
Original language | English |
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Article number | 092907 |
Journal | Applied Physics Letters |
Volume | 106 |
Issue number | 9 |
DOIs | |
State | Published - Mar 2 2015 |
Bibliographical note
Publisher Copyright:© 2015 AIP Publishing LLC.
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)