Room temperature optical anisotropy of a LaMnO3 thin-film induced by ultra-short pulse laser

Purevdorj Munkhbaatar; Zsolt Marton; Baatarchuluun Tsermaa; Woo Seok Choi; Sung S.Ambrose Seo; Jin Seung Kim; Naoyuki Nakagawa; Harold Y. Hwang; Ho Nyung Lee; Kim Myung-Whun

doi:10.1063/1.4914094

Room temperature optical anisotropy of a LaMnO₃ thin-film induced by ultra-short pulse laser

Purevdorj Munkhbaatar, Zsolt Marton, Baatarchuluun Tsermaa, Woo Seok Choi, Sung S.Ambrose Seo, Jin Seung Kim, Naoyuki Nakagawa, Harold Y. Hwang, Ho Nyung Lee, Kim Myung-Whun

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

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 e_g 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
Article number	092907
Journal	Applied Physics Letters
Volume	106
Issue number	9
DOIs	https://doi.org/10.1063/1.4914094
State	Published - Mar 2 2015

Bibliographical note

Publisher Copyright:
© 2015 AIP Publishing LLC.

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

Access to Document

10.1063/1.4914094

Cite this

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title = "Room temperature optical anisotropy of a LaMnO3 thin-film induced by ultra-short pulse laser",

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.",

author = "Purevdorj Munkhbaatar and Zsolt Marton and Baatarchuluun Tsermaa and Choi, {Woo Seok} and Seo, {Sung S.Ambrose} and Kim, {Jin Seung} and Naoyuki Nakagawa and Hwang, {Harold Y.} and Lee, {Ho Nyung} and Kim Myung-Whun",

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doi = "10.1063/1.4914094",

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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

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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