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Ultrafast spectroscopy of the Mn 3+ d-d transition in YMnO 3 film

Journal Article


Abstract


  • Photoinduced carrier dynamic behavior of the Mn 3+ 3d resonance excitation of YMnO 3 thin film is studied by the femtosecond time resolved spectroscopy. The photon energy of the pump pulse is tuned to 1.70 eV, which is corresponding to the Mn 3+ 3d energy level at room temperature. With resonant excitation, the transient transmission signals at the zero-delay time gradually increase with temperature increasing. The temperature dependent transmission change results from the blue shift of the Mn 3+ 3d energy level, which is believed to originate from the short-range antiferromagnetic order in YMnO 3 film. In addition, the fast and slow relaxations of the transient signal arise from electronic-phonon and phonon-spin interactions, respectively. When the temperature is lower than TN, the relaxation time of the fast process increases significantly, which indicates that the strength of electronic-phonon coupling is restrained by the long-range antiferromagnetic order. ©2012 Chinese Physical Society.

Publication Date


  • 2012

Citation


  • Xu, Y., Jin, Z. M., Li, G. F., Zhang, Z. B., Lin, X., Ma, G. H., & Cheng, Z. X. (2012). Ultrafast spectroscopy of the Mn 3+ d-d transition in YMnO 3 film. Wuli Xuebao/Acta Physica Sinica, 61(17), 1.

Scopus Eid


  • 2-s2.0-84867185267

Web Of Science Accession Number


Start Page


  • 1

Volume


  • 61

Issue


  • 17

Abstract


  • Photoinduced carrier dynamic behavior of the Mn 3+ 3d resonance excitation of YMnO 3 thin film is studied by the femtosecond time resolved spectroscopy. The photon energy of the pump pulse is tuned to 1.70 eV, which is corresponding to the Mn 3+ 3d energy level at room temperature. With resonant excitation, the transient transmission signals at the zero-delay time gradually increase with temperature increasing. The temperature dependent transmission change results from the blue shift of the Mn 3+ 3d energy level, which is believed to originate from the short-range antiferromagnetic order in YMnO 3 film. In addition, the fast and slow relaxations of the transient signal arise from electronic-phonon and phonon-spin interactions, respectively. When the temperature is lower than TN, the relaxation time of the fast process increases significantly, which indicates that the strength of electronic-phonon coupling is restrained by the long-range antiferromagnetic order. ©2012 Chinese Physical Society.

Publication Date


  • 2012

Citation


  • Xu, Y., Jin, Z. M., Li, G. F., Zhang, Z. B., Lin, X., Ma, G. H., & Cheng, Z. X. (2012). Ultrafast spectroscopy of the Mn 3+ d-d transition in YMnO 3 film. Wuli Xuebao/Acta Physica Sinica, 61(17), 1.

Scopus Eid


  • 2-s2.0-84867185267

Web Of Science Accession Number


Start Page


  • 1

Volume


  • 61

Issue


  • 17