TY - JOUR
T1 - Room temperature optical anisotropy of a LaMnO3 thin-film induced by ultra-short pulse laser
AU - Munkhbaatar, Purevdorj
AU - Marton, Zsolt
AU - Tsermaa, Baatarchuluun
AU - Choi, Woo Seok
AU - Seo, Sung S.Ambrose
AU - Kim, Jin Seung
AU - Nakagawa, Naoyuki
AU - Hwang, Harold Y.
AU - Lee, Ho Nyung
AU - Myung-Whun, Kim
N1 - Publisher Copyright:
© 2015 AIP Publishing LLC.
PY - 2015/3/2
Y1 - 2015/3/2
N2 - 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.
AB - 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.
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U2 - 10.1063/1.4914094
DO - 10.1063/1.4914094
M3 - Article
AN - SCOPUS:84924087945
SN - 0003-6951
VL - 106
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 9
M1 - 092907
ER -