| Autor: |
Munkhbaatar, Purevdorj, Marton, Zsolt, Tsermaa, Baatarchuluun, Choi, Woo Seok, Ambrose Seo, Sung S., Jin Seung Kim, Naoyuki Nakagawa, Hwang, Harold Y., Ho Nyung Lee, Kim Myung-Whun |
| Předmět: |
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| Zdroj: |
Applied Physics Letters; 4/23/2015, Vol. 106 Issue 9, p1-4, 4p, 4 Graphs |
| Abstrakt: |
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. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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